Suppressed 300 Blackout Upper

56mm is a fast-moving and accurate round. 5″ rifle barrel with a permanent suppressor. 300 Blackout Barrels that they offer are no exception. The 300 AAC Blackout pistol can also be used without a suppressor to shoot full-bore supersonic monsters with AR-15+ impact. Additionally, it was developed by Advanced Armament Corporation to be used in the M4 Rifle. 2” 300 Blackout Bloodline Barrel was designed for SBR and Pistol use in conjunction with suppressors. 56, and 300Blk for uppers, and a complete rifle in 308. The firearm may not lock back with subsonic 220 and 208 grain ammunition without a sound suppressor. 56mm NATO ammunition. The Winchester Super Suppressed line of rifle ammunition offers clean and reliable performance and is engineered for noise reduction, decreased barrel/suppressor fouling and recoil mitigation. Supersonics are burned out out by then and subs are done at 9". If you are running a blackout, I HIGHLY recommend a pistol length gas system. Radical Firearms AR-15. 300 AAC Blackout ammo, SAAMI short name 300 BLK, also known as 7. 300 Blackout Upper. Reloading Information. That is when I noticed the menu option for the Complete Uppers. Adding a suppressor makes the 300 Blackout shine. 300 Blackout Pistol: An Obtainable Unicorn Posted on June 26, 2015 March 12, 2019 by thisguy41487 I must admit, I’ve had two very prevalent fascinations over the past year or so: Sound suppressors and running a. This essentially gives you two rifles in one, the 300 for close up shots and the 5. I'd like to build a 10. and Remington in order to provide the military with a way to shoot. Pro2A Tactical believes in total. 300 Blackout Magazine. 8″ ID to allow for suppressor accessories and suppressors. The handguard is a 9″ enhanced KeyMod handguard which features a 1. 300 Whisper/. 223 Rem and 5. Advanced Armament Corp. 5/300 SUURG Kit - Details, Suppressed Ultimate Upper If I get that 300 BLK SUURG, I would probably go for a much cheaper optic like a. Articles have been written on the. 300 Whisper /. The 300 Blackout is a known to be problematic in un-suppressed AR-15s for all but the the hotly loaded 110gr rounds. I'd like to get a. I am planning on 9-10. 300 Blackout won't ever replace the venerable 5. This round is widely used for hunting because of its proper balance of weight, ballistics, size, and economics between the 5. Atheris Rifle Co. 56, all you need is a 5. Com Archive. Sort By: Featured Items Newest Items Best Selling A to Z Z to A By Review Price: Ascending Price: Descending. Ready for transfer to your local Class 3 dealer. YHM - manufacturer and dealer of high quality Firearms, Firearm Accessories, and Sound Suppresors. SIG SAUER MCX 300BLK Suppressed Complete Upper - 16. 300 BlackOut barrels come with the gas holes drilled too large as that way they will shoot anything without complaints). Since the integral suppressor extends the barrel to an NFA-required 16 inches in length, it is not considered an SBR. 5" 300 blackout. Given some of the best. With some modification of a wildcat cartridge - namely the. 5″ Pistol-Length 300AAC Blackout 1/7 Nitride 7″ M-Lok Classic SOB Pistol. The ARP Tactical uses the same premium Wilson Combat components as our legendary tactical rifles and can also be ordered ready for suppressed use. Fired less than 200 rounds through it. No one wants. This is the quietest, shortest, most affordable suppressed upper that you can own with one tax stamp. This rifle was built with nothing but weight in mind with no budget. At AAC, it's all we think about. There is also the story of the. The weapon is named after the honey badger. 300AAC blackout NIB with an Alexander Arms. 5″ rifle barrel with a permanent suppressor. This 300 is now what I am using to control my hog and coyote problems. 56 bolt carrier group and magazines. 56mm M855 when either are fired through a short barrel. In supersonic loadings,. 5" 300 BLK Pistol - 10" Primary Arms Exclusive M-LOK Rail and Shockwave 2M Blade - $459. 300 Blackout was delivered by Advanced Armament. The Blackout’s roots are spread in the soil of the U. The primary advantages of the blk are the ability to run an SBR with subsonic or ultrasonic, suppressed or unsuppressed, without needing an adjustable gas block. Our unique design features our own 8" proprietary stainless steel match grade barrels inside of our own Houston Armory Hand-guards. The Daniel Defense DDM4ISR (Integrally Suppressed Rifle) 300 joins our family of precision-crafted M4 Rifles. It will be shooting entirely supersonic ammunition in the 110-125 grain range, unsuppressed. 300 Blackout SBR suppressed? Discussion in If there's no reasonable advantage over 9mm then I can't justify a secondary. Get the best deal on Integrally Suppressed Upper. Sure, the full-auto lower added to the experience, but the prospect of a light weight, normal-length, hearing-safe, plug-and-play upper on your standard AR lower is awfully compelling. 56 bolt carrier group and magazines. 300 blackout pistol with a 7 inch barrel. The second best 300 Blackout upper is the Noveske 10. This is the NEW Integrally Suppressed. The best case scenario is to have a completely separate. The metric designation is 7. 5" Barrel, M-Lok Handguard, Black Finish, Includes Charging Handle, Carrier, Sig Duo Matchlite Trigger & 1913 Adapter to convert Standard AR lower to. Get the best deal on SUR300. 300 AAC Blackout and the idea behind its development was to provide a caliber in two different power levels. Pistol length. 300 BlackOut barrels come with the gas holes drilled too large as that way they will shoot anything without complaints). No special bolts or magazines to buy to get into a new caliber! Just drop an upper on your standard mil-spec AR-15 lower, and. com)-The thing about my projects with the. Since the integral suppressor extends the barrel to an NFA-required 16 inches in length, it is not considered an SBR. The M4E1 uppers are designed for long term use and will give you a lifetime of use. The 300 AAC Blackout is a great cartridge, but most weapons will need a new receiver before they can fire it. Sounds like a very handy option iif you plan to use suppressed subsonic ammo at times, with that sort of a drop. I have owned a lot of 5. The 300 Blackout is the quietest of the unsuppressed guns. The suppressor wrapped and installed on the 300 Blackout upper. 300 AAC Blackout AR-15 upper? Military Weapons Forum. Related Products Integrally Suppressed. Standard 5. Palmetto State Armory. 300 BLK Ammo. SIG SAUER MCX 300BLK Suppressed Complete Upper - 16. We use cookies to ensure that we give you the best experience on our website. Super Ultra Light, Feather weight Ti action from Pierce Manufacturing (Titanium bolt) AG Composite CAT stock, Leupold LRP, Hawkins Precision mounts and bottom metal, magpul mag. 300 Blackout round to around 120dB and a. Essentially a legal sbr with no tax stamp. Selecting Your Scope. 300 AAC Blackout chambered barrel. Supersonic. AAC 300 Blackout Remington 220 gr. Pistol length gas system. Especially at the price. ALL BARRELS ARE REGISTERED NFA ITEMS AND WILL NEED TO BE TRANSFERRED ON A FORM 3 OR FORM 4. 300 AAC Blackout Rifle Cartridge by Nosler Inc. 1 in 8" twist rate for shooting super-sonic and sub-sonic ammo. 300 Blackout short cycling - NOW UP AND RUNNING! This is a discussion on New. The included AAC BLACKOUT flash suppressor eliminates all secondary muzzle flash. It’s been around for well over a hundred years and served in dozens of different countries. Each barrel has a non-glare bead blast finish which is then ArmorBlak coated and threaded for applicable muzzle devices. I'm getting. 300 Whisper &. The SRD762 is the best 300 Blackout suppressor in the budget category. This 300 is now what I am using to control my hog and coyote problems. 300 Blackout won't ever replace the venerable 5. As far a getting a Lefty 300 Black Out, If you just had a Lefty Rifle it can easily be rebarreled to make it a 300 Blackout and then you could sell the 5. I'm building a. The end result is a hybrid that performs both suppressed and supersonic. Build list-Mega Arms 10. The easiest way to do the modification is to buy the best 300 blackout upper that is available and to slot it into your weapon. If you're still on the 300 BLK fence, you need to. The Soviet 7. Gemtech made quite a splash at the 2016 NRA annual meeting. The firearm may not lock back with subsonic 220 and 208 grain ammunition without a sound suppressor. Sig Sauer, MCX, 300 Blackout, 9" Barrel w/Pinned Suppressor, Pinned And Welded, 16. This rifle length. Search results for '300 blackout' Items 1 to 60 of 187 total Show 15 30 45 60 per page. Also, with option for stainless steel or 4150 with Nitride finish barrel. ⭐️⭐️⭐️⭐️⭐️ Daniel Defense Integrally Suppressed 300 Blackout Upper is best in online store. 300 Blackout does nothing that supersonic 5. 300 Blackout Upper. 8 SPC but with less powder and resulting blast. 5" Pistol-length Chrome-Moly Vanadium,. Subscribe to the Radical Firearms Blog. 300 blackout upper that I bought mostly to shoot suppressed subsonics in. KAK INDUSTRY is a design and manufacturing company that specializes in wildcat uppers for LR-308 platform and AR15. 5" configurations I should look into?. In my opinion, the two rounds are designed for different tasks and having both simply opens up your options. For what it is, 300 BLK is a quality cartridge that fills a very narrow, but important niche. 56mm model has a 10. the next step on your AR is to upgrade to a 300 Blackout upper from ghost firearms. Includes: Aero Precision M4E1 Enhanced Upper Receiver with custom designation and M4E1-SD engraving. That’s why I ordered my upper from PSA, it was cheap and I was Blackout pistol curious. Wilson Combat has released a new proprietary AR-15 cartridge dubbed the 300 HAM’R. Houston Armory's Integrally Suppressed 300 Blackout Uppers! AR15. 223 vs 300 Blackout for kids rifle Considering the 223 or 300 Blackout for a kids rifle for deer hunting. Atomic Ammunition 300 AAC Blackout Subsonic 260 Grain Expanding Round Nose Soft Point Box of 20 Atomic Ammunition’s 300 AAC Blackout ammunition is loaded with ATOMIC Ammunition’s proprietary 260 grain round nose soft point SUBSONIC hunting bullet, this round is quieter, has less felt recoil, produces the more energy and power than most 357 Magnum and 10mm cartridges yet delivers excellent. 56 AR 15 uppers, save for the. 62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. HBAR Medium Contour, 0. It looks like a bad ass gun from a movie. 300 Blackout is known for its reliability and effectiveness when used in a short barreled or suppressed rifle, especially when compared to the. I have a huge number of visitors that come to these pages each day so please drop in the forum and. The easiest way to do the modification is to buy the best 300 blackout upper that is available and to slot it into your weapon. I'd like to build a 10. Seekins has exceeded my expectations and this upper shoots as good as it looks. This Rosco 10. 5" shroud that is permanently attached, for a legal 16" rifle length. 5" 300 AAC / Blackout Barrel + 5. 300 Blackout 8"(ish) SBR Suppressed upper In the short term, I can play with it on an 7. 300 BLK is the. Has anyone here been sucessful hunting with the 300 AAC Blackout? I meet a group of shooters who recently bought 300AAC Blackout uppers for their AR's - just waiting on better weather to use them. 300 Blackout, it makes somewhat less sense. pdf Bravo Company Manufacturing is now offering a line of 300 Blackout upper carbines and upper receiver groups in Recce 16″, 12. Right To Bear 6" Barrel (300 Blackout) Very few companies make a 6". I mean what says it all better than using the moniker Blackout? Of course the 300 Blackout started out as the 300 AAC (for Advanced Armament Corporation) but evolved into the nomenclature of the 300 Blackout. Sounds like a very handy option iif you plan to use suppressed subsonic ammo at times, with that sort of a drop. 300 blackout caliber uppers use your standard. 300 BlackOut barrels come with the gas holes drilled too large as that way they will shoot anything without complaints). Dead Air Sandman S, SilencerCo Omega 300, or Rugged Surge 762 are the most common recommendations for suppressed 300 BLK. SBRs are so hot right now. 300 Blackout dedicated suppressed upper receiver is the first of it's kind in the Aero Precision lineup and has been fine tuned to our standards, resulting in a premium quality, high performance upper assembly. 300 AAC Blackout and produced by Advanced Armament Corporation (AAC), a subsidiary of Remington Outdoor Company. 5" Puritan Barrel with Mid-length Dictator, 1:8 Twist, Black Finish, Mission First Tactical Grip and Stock, 30Rd, MLOK Renegade Rail, Triple Port Muzzle Brake, POF-USA 3. 300 AAC Blackout SBR/Pistol Upper Receiver, 7. Flat rate shipping on all guns and ammo with the best prices around!. The MK109 is a variation of the Primary Weapons System MK1 long piston upper system. 300 blackout pistol with a 7 inch barrel. The handguard is a 9″ enhanced KeyMod handguard which features a 1. This is a discussion on FS: Noveske 10. 56mm rifles. Head to Toe Kuiu Verde 2. The SIG Sauer Suppressed Upper Receiver in. 56 AR15 Upper by Witt Machine & Tool. Your direct thread suppressor (max 1. Can you do an AR pistol in NY?. 300 black I have heard in person thru a can and it did "seem" quieter /more hearing safe than suppressed 556 BUT how it seems is a very subjective and inconclusive test as to whether or not it is quieter than 556 I HAVE NOT heard a subsonic 300 black round in personmaybe that's the ticket. 300 Blackout for your next AR (or upper) purchase? from standard AR-15/M16 magazines and function reliably when teamed with a suppressor for subsonic loads. FollowRadical Firearms on Twitter. Head to Toe Kuiu Verde 2. Barrel profile fluted toward the rear near chamber area - Increases strength and heat dissipation. 223 vs 300 Blackout for kids rifle Considering the 223 or 300 Blackout for a kids rifle for deer hunting. 2” 300 Blackout Bloodline Barrel was designed for SBR and Pistol use in conjunction with suppressors. Free shipping on all orders over $99. Built around a 9", Cold Hammer Forged barrel that is fluted along with a target crown and a standard pistol length gas system, this versatile, high-performance URG accurately delivers both subsonic and supersonic projectiles downrange with unrelenting reliability. These clock 2400 fps. Namely, a subsonic loaded cartridge that can be fired in suppressed firearms and a supersonic load with ballistics that rival or equal 7. 300 upper with a 16" barrel and a pistol length gas system. Compatible with MCX and MCX VIRTUS systems, this upper is also compatible with most standard M4/AR-15 lower recievers. 300 BLK vs 7. By simply changing out your barrel (and JUST the barrel) you get a completely different gun, one with more muzzle energy, able to just about sound like an MP5-SD, and 100% compatible with all of your existing gear. So, I’ve been looking at possibly adding a. DD AR15 in 300BLK- a versatile caliber or useless?. Sig Sauer MCX VIRTUS UPPER ASSEMBLY - 9" 300BLK Parts. With some modification of a wildcat cartridge - namely the. Made as a drop in replacement barrel for any mil-spec upper receiver. The MCX upper has some cool features: – 6. 300 Blackout AR-15 pistol with an aftermarket piston system. Most subsonic and supersonic loads, fired from either a suppressed or unsuppressed gun, are compatible with this configuration. The PSA upper has a heavy SS barrel and is overgassed but it will shoot anything you stuff in it. Flat Top Upper Receiver. It would fill the spot of a bedside/ backpack/ truck gun. But what if you could start from scratch, designing an AR-15 intended to host your favorite. 30 Caliber Bullets. But this leaves most over-gassed for most general usage (especially suppressed). This is a dual-purpose round originally developed for the U. then found out about. Bravo Company Manufacturing – 300 Blackout Click to view. Looking for an AR-15 upper receiver in. 300 AAC Blackout is the cartridge built to function in the AR-15 platform, and with its design comes a different mindset, as the cartridge is called upon to fill a special role. The Integrated Suppressor (IS) Matt Mozak of Daniel Defense walked me through the latest, greatest DD rifle. 56mm M855 when either are fired through a short barrel. 300 Blackout ammo increases versatility of the AR-15 platform – allowing hunters to easily harvest medium-sized game animals with stellar accuracy and controllable recoil. 300 Blackout models exist. Sig Sauer's Suppressed Upper Reciever (SUR) in. Posted March 12, 2019 in AR Patterned, NFA / Suppressors / Class III, Reviews by Pete with No Comments Tags: 300 BLACKOUT, dB meter, suppressed upper, Yankee Hill Machine, YHM ULTimate. 5" Pistol-length Chrome-Moly Vanadium,. 30-Cal cartridge of choice for the AR15 platform, the 300 AAC Blackout, also known as 300 BLK, has become quite popular with black rifle owners. BMS 300 Blackout 10. ALL BARRELS ARE REGISTERED NFA ITEMS AND WILL NEED TO BE TRANSFERRED ON A FORM 3 OR FORM 4. You'd need one stamp for the gun and one stamp for the suppressor unless you permanently attach the suppressor to the upper (I wouldn't recommend doing this with a $900 suppressor). New Product Announcements and Good Deals You can only post guns and ammo for sale or links to guns and ammo here, in the classified section, or in a dealer/manufacturer area. The compact design is the perfect complement to the. Shadow Ops has a base model, seen in photos. 300 BLK vs 7. The 300 Blackout is a natural for use in the AR-15/M-16/M-4 platform, as it uses the same bolt, bolt carrier, springs, and magazine as does the standard 5. Follow Radical Firearms on Instagram. Gemtech made quite a splash at the 2016 NRA annual meeting. 300 Blackout supersonic it is not as loud as my. Shielding the barrel and Carbine gas system is the MFR 15. The MCX upper has some cool features: – 6. The 300 AAC Blackout is a great cartridge, but most weapons will need a new receiver before they can fire it. That was based on supersonic loadings of 110-125 grain bullets. AR15 parts and accessories. 300 Blackout Upper. I load 110 grain Hornady GMX bullets over a maximum load of H-110. Gemtech made quite a splash at the 2016 NRA annual meeting. I never served in the military, I don't own any clothing in any of the. 300 BLK cartridges may be in short supply and more difficult to find than 5. I have had several 300 whisper uppers over the past 20 years and now 300 blackout builds and none of them exept the integral suppressed have been quieter than any 9mm builds I have. The Winchester Super Suppressed line of rifle ammunition offers clean and reliable performance and is engineered for noise reduction, decreased barrel/suppressor fouling and recoil mitigation. 300 AAC Blackout. The 300 Blackout AR-15 Build Guide I've had questions come through from a builder or two about 300 Blackout and its compatibility with existing build kits, parts, and the AR-15 platform. 300 Blackout, I was not able to find any subsonic 7. TECHNICAL INFORMATION: The Blackout has proven itself to be an effective medium game cartridge when used at appropriate range. Anybody running a. Shades of Gray:. But unless you go through the hoops of legally building your AR-15 as an SBR, you'll need to configure it as a pistol. 2" and longer AAC has 9" and 12. 300 AAC Blackout, OTM, 220 Grain, 20 Rounds available at a great price in our. 300 BLK) Add to Cart. 223 vs 300 Blackout for kids rifle Considering the 223 or 300 Blackout for a kids rifle for deer hunting. 750" diameter low prof. 50 Beowulf upper with Troy foregrips with two magazines? I need to replace the muzzle device on the. I keep the 300 Blackout upper set up with a red dot site for home and personal defense. Order the Radical Firearms 300 Blackout Integrally Suppressed Upper 16-inch 1:8 Twist online and save. Includes: Aero Precision M4E1 Enhanced Upper Receiver with custom designation and M4E1-SD engraving. 300 BLK upper. 300 Blackout is an astonishing option for chasing. 30 caliber bullet, and has various grain weight bullets, and a readily available subsonic bullet, can use a standard AR 15 lower, and AR 15 magazines. 300 Blackout won't ever replace the venerable 5. The use and ownership of suppressors across the United States is growing in popularity. 5R button rifling and 1:7 twist. Built around a 9”, Cold Hammer Forged barrel that is fluted along with a target crown and a standard pistol length gas system, this versatile, high-performance URG accurately delivers both subsonic and supersonic projectiles downrange with unrelenting reliability. Parts list (with direct links to purchase on the website): SLR Rifleworks B15 Billet Upper Receiver; SLR Rifleworks B15 Billet Lower Receiver (we are currently not an FFL) SLR Rifleworks 9. Features: BMS 300blk Upper. The 300 Blackout AR-15 Build Guide I've had questions come through from a builder or two about 300 Blackout and its compatibility with existing build kits, parts, and the AR-15 platform. 300 AAC Blackout is an incredibly versatile cartridge. F1 durabolt. Is there a "cheapish" 300 blackout plinker load that works with suppresors? I know heavier bullets but can I use a 150gr fmj in 308?. Listening to the sound in the accompanying video suggests that might be true. Head to Toe Kuiu Verde 2. Without the need for inconel blast baffles or super short. 300 BLK) Add to Cart. 30 caliber suppressor? What if you could retain the benefits of a suppressed Short Barreled Rifle (SBR) while eliminating the hassle of NFA rules, regulation and the cost of tax stamps? The Tactical Solutions TSAR in 300 Blackout is that gun. I can run the same HVT Gemtech on my 5. FollowRadical Firearms on Twitter. 56mm model measuring about 131 dB at the shooter’s ear and the 300 Blackout ticking off 128/129 dB using subsonic ammunition. The second best 300 Blackout upper is the Noveske 10. She feels like a whole new rifle! I am so pleased with how she turned out. This is the AAC 300 Blackout upper with a Noveske N4 lower and the Silencerco Specwar762. I'm not tactical. 4” and keeping it a one tax stamp, integrally suppressed firearm. For civilian use,. The best 300 Blackout upper overall is the Radian Weapons Model 1 with a 9-inch barrel. Ready for transfer. 300 AAC Blackout Products for Sale at Tombstone Tactical. 62x35mm) weapons. 75” Cold Hammer Forged Barrel – Permanently Attached 19 Baffle Titanium Suppressor – Free …. SIG SAUER MCX Virtus Upper Assembly. A perfect mate to our Whisper Suppressor, the SBR Tactical takes custom-crafted small Tactical rifles to the next level. 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. The 300 BLK or. I have a new Sig SRD762Ti in 7. I just got a. The second reason the 300 BLACKOUT seems to be gaining steam and appears to be here to stay is the fact that caliber is a joint product of two Freedom Group companies Advanced Armament Corp (AAC) and Remington. Our engineers work to ensure that we have the quietest, most reliable products. 300 Blackout WOLF Ammo to Hit the US Market - The AK Files Forums Up to 60% Off Daily Deal Products. Their SBR is built around an integrallysuppressed handguard, basically a can with. 223 Rem and 5. I'm getting. And the best 300 Blackout upper for the money is the BCM 9-inch MCMR-8. Standard 5. 300 AAC Blackout chambered barrel. However, due to the large operational range of 300 Blackout ammunition in the market place, BCM cannot guarantee function will all ammunition types in all conditions. If you're still on the 300 BLK fence, you need to. With the goal of producing a replacement for the U. Reasonable thoughts on 300 Blackout for Whitetail Deer? just replacing the upper. It is essentially compatible with any cartridge of a lesser caliber, making it an ideal AR-15 suppressor, especially for those who tend to have a couple different chamberings at hand. 458 socom vs. Compatible with MCX and MCX VIRTUS systems, this upper is also compatible with most standard M4/AR-15 lower recievers. 30 caliber bullets from the M4 platform with only a barrel change. Now that I got the paperwork back I have the SBR lower and 300BLK upper mated with a YHM Phantom. Includes: Aero Precision M4E1 Enhanced Upper Receiver with custom designation and M4E1-SD engraving. 300 AAC Blackout is a nearly perfect home defense cartridge. 75” Cold Hammer Forged Barrel – Permanently Attached 19 Baffle Titanium Suppressor – Free …. 2” 300 Blackout Bloodline Barrel was designed for SBR and Pistol use in conjunction with suppressors. 300 ACC Blackout. Liberty Leonidas uses 9" bbl It's been two years since the thread below so I'd figure I'd ask for an update. 5 grains would be a good starting point??. Here at Veriforce Tactical we pride our selves on Building and producing only quality AR 15 300 Blackout Upper Receivers. As far a getting a Lefty 300 Black Out, If you just had a Lefty Rifle it can easily be rebarreled to make it a 300 Blackout and then you could sell the 5. So when I saw this little guy, I had to get my hands on it. It makes no sense to charge a premium for a shorter barrel, so we decided to bring a "Honey Badger" size barrel into the market at a reasonable price. 30 caliber silencers, the GMT-300BLK is specifically engineered for the. This build is going to be for dedicated sub sonic, suppressed work. This 16" 300 Blackout upper utilizes the versatile carbine length gas system, a good choice for this cartridge if various weights and types of ammunition are to be used. This Rosco 10. フレッシュ Aero Precision 8 Inch 300 Blackout Ultimate Custom Ar 15 300 Blackout Pistol Build Alloutdoorcom. On the other hand, 300 Blackout fans in more sheltered environments will thrive with the P-series on their rifle. 300 AAC Blackout Rifle Cartridge by Nosler Inc. Marine Corps veteran in 2005, BCM builds rifles and parts to meet the unforgiving needs of law enforcement, military and civilian shooters. 300 Blackout Magazine. No special bolts or magazines to buy to get into a new caliber! Just drop an upper on your standard mil-spec AR-15 lower, and.