Why 300 Blackout? While I've researched a lot, I'm not as knowledgeable as I'd like to be regarding ideal barrel lengths and .300 ballistics for this purpose, also considering added length of a suppressor someday inside a tight hallway. Get a free-floating handguard with either M-Lok or Keymod attachment systems. Unpacking the Sig 300 Blackout. My Wilson combat upper is 11.5" + the Wilson .30 titanium can. Other than fun plinking and a lot of training, it could be pressed into service outside checking on a bump in the night around our five acres, but I'd likely grab another carbine if I knew I were heading outside. Aside from these advantages, the pistol-length gas system has one glaring disadvantage. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the initial testing, and who continue to design guns around that caliber. bullets (though 10.8 seems to give the same velocity) and he worked up a 110 gr. the 300 Whisper, 300/221, 300 Fireball, 300 WTF  or 300 AAC BLK .. all achieve everything its going to in 10.5"  .. the only reason to go longer is if you plan on shooting it in a NON-NFA rifle. The barrels are all equipped with a standard A2 muzzle brake that’s been proven efficient and effective. Any use of this content without express written consent is prohibited. The 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. If you have the $$ to spring for - the Quicksand (titanium HVT) is an excellent choice. I have been reading and watching videos and many talk about not needing a 16" barrel seemingly because of velocity … Might as well go to the source and ask the developer of the round. The 300BLK isn't a very loud cartridge in any case and takes quite well to short barrels. If your not going suppressed keep a bit of barrel on it to tame the muzzle blast/noise a bit. These can handle barrels measuring up to 16 inches in length. The 300 Blackout is a rifle cartridge that’s more powerful than 5.56/.223 (AR-15 ammo) when fired out of a barrel that’s less than 16 inches long and works reliably with both super- and subsonic ammo. I've seen things you people wouldn't believe. A little more time for the pressure to push and to stay in the rifling. ), also known as 7.62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. 8.5" is traditional, but a lot of folks are trying 7.5" and 6.5". The 762SD is lighter - but I prefer the bi-lock attachment of the HVT. + FL Ammo Background ? All Rights Reserved. Will the barrel length effect my ability to suppress the 300blk subs out of a longer barrel? If you like long-range shooting, a longer barrel is helpful. If you're shooting subsonic .300BLK, it's because you are suppressing it. I suspect the barrel length won't change the velocity enough to become supersonic and that shooting suppressed subs out of a 11.5 won't be noticeably different than a 9". Ideal 300 Blackout Barrel Length for HD Pistol that will eventually be Suppressed? I have a 11.5 300blk upper on the way. Caliber: 300 Blackout – WC-15 Platform Barrel Length: 8″ Round Threaded, 11.3" Round Threaded Overall Length: 25″ (8" Barrel), 28.25" (11.3" Barrel) Weight Empty: 5 lbs, 9.8 oz (8" Barrel), 6 lbs 0.2 oz (11.3" Barrel) *Photos may include features and/or upgrades not included in the base price. SALE PRICE: $139.99 (Out of Stock) (2) Right To Bear 6" .300 Blackout Pistol Length Barrel MSRP $155.00 . All those moments will be lost in time, like tears in rain. lmlandlord I was also looking at getting a complete upper in 300 Blackout to switch out as needed. Dane, You can go with what ever barrel length you son wants. Here is a Noveske 10 in barrel w/ 9 inch LaRue rail. Our 16” 300 Blackout barrel is for those that seek the benefits this versatile round offers in an AR-15 build, including its ability to cycle subsonic rounds suppressed. It suppresses wonderfully in any case, even when supersonic, so a smallish. Beyond that, the 300 Blackout round is ideal for shooting suppressed. If your goal is to have the quietest 7.62 suppressor than it isn't your best bet. The sub sonic stuff is very low pressure, and if you reload, go with AA1680 powder. Copyright © 1996-2020 AR15.COM LLC. 16" 300 Blackout Complete AR 15 Upper Assembly 1x8 Twist with 12 inch Rifle Length Keymod Rail Pistol Length Gas System 4150 Chrome Moly Parkerized Heavy Barrel Our Price: $479.99 Savings: $20.00 When deviating from the norm, gas control becomes an issue. Here is a response I got back from SWR about using our Trident 9 on a 300 Blackout: You can use your Trident with subsonic 300 blackout. Right To Bear 9" .300 Blackout Pistol Length Barrel, Performance Series MSRP $190.00 . My son is looking at the AAC 762 SD or the Gemtech HVT for a 300 Blackout. *Weights shown are close approximations. Once considered an exotic round, 300 Blackout has become a household caliber.One of the best ways to shoot 300 Blackout is suppressed. I wouldn't say I'm a gun nut... but I'd consider extreme enthusiast. The round is designed to completely burn its powder in 9″ of barrel, which means my … + Franklin Armory Sues Over Patent. Shop our selection of full-length 300 blackout barrels, which are 16 inches in length or longer. The uppers all feature different length handguards, that accommodate the mounted flash suppressor. They Said It Could'nt Be Done...Optics 1 ECOTI Latest Fusion Available Commercially from TNVC! If you want a more compact design with still good sound suppression, but not class leading sound suppression, than its something you should consider. check out the. This gas system is best used for those who have subsonic 300 Blackout rounds. Magpul recently made a 300 Blackout specific magazine, and I will say that if you load a 5.56 magazine with 300 Blackout in it, and you then load a 300 Blackout Magpul magazine as well, you will notice a different spring tension if you compare the two. Both lengts work well for me. The .300 Blackout or .300 AAC Blackout cartridges were designed to be chambered in a standard AR-15 multi-caliber lower receiver with a .300 Blackout barrel. Sig MCX Upper, 300 Blackout, 9" Barrel, Suppressed, Pinned & Welded, Black. Featuring a 1:8 twist rate, this barrel makes it ideal for .300 Blackout … Check out our huge selection of 300 Blackout Rifle Barrels in all the gas tube sizes, available in different lengths and calibers. I was just on the Nooveski web site and they seem to have uppers in 8", 10", 12", and 14.5" barrels. Scotchy, scotch, scotch. When combined with a suppressor, 300 Blackout ammo can give you one of the most powerful, nearly silent rifles you can have. A suppressor adds 6-9" to the barrel length typically. His would cycle subsonics unsuppressed. This barrel comes with a heavy profile and was designed to endure high rates of fire. Who's suppressor works best with these barrel lengths? The 300 AAC Blackout squeezes 30 caliber firepower into the traditional AR-15 envelope, and is available in either subsonic or supersonic ammunition varieties to serve a multitude of purposes. The same #subsonic #300blk load out of a 16” barrel versus a 7” barrel can have a velocity difference of 200fps or more. I was thinking that a 16" barrel may be a good option. Depends on your use of the ..308 can. If you have a 9mm can, it will work well for the sub sonic loads only. As far as suppressors, any suppressor in 30 caliber will work fine. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. load that was pushing 2100 fps. A 10-inch barrel on an AR pistol or a short barreled rifle is perfect for the .300 Blackout. Bearing in mind optimal doesn’t imply that it’s necessary, for the.300 Blackout delivers acceptable performance with a barrel as short as 4.5-inches. But it depends on your goals. Why Subsonic 300 Blackout Needs a Pistol Length Gas System Posted by Nic Johnson on Sep 13, 2016 When entering the subsonic world you are going to be factoring in a suppressor, different ammunition types, barrel sizes, and gas systems, buffer tube weights. What is the Optimum Barrel Length & Suppressor combo in 300 Blackout? Here it goes down, down into my belly... thanks me too,just waiting on 762sdn too. One of the other issues was magazines. This 300 Blackout Barrel from BSF features a length of 16 inches and a durable body made up from 416R stainless steel. the 300 Whisper, 300/221, 300 Fireball, 300 WTF or 300 AAC BLK .. all achieve everything its going to in 10.5" .. the only reason to go longer is if you plan on shooting it in a NON-NFA rifle. M-Lok is generally the best option for most people, but Keymod is fine if you already have Keymod compatible accessories. SALE PRICE: $139.95 (Out of Stock) (4) Right To Bear 8" .300 Blackout Pistol Length Barrel… I chose a 9" barrel for a couple of reasons, but here's one that influenced me. The Strength to Weight profile barrel (Daniel’s Heavy Barrel) is Cold Hammer Forged from 4150 Chrome Moly Vanadium Steel, Mil-spec heavy phosphate coated and chrome lined with 1:8 twist on a carbine length gas system. We refer to it as one rotation over a particular inch of barrel. Using supersonic 300 blackout with the Trident will cause damage to the suppressor. Long 300 Blackout Barrels. My son Tom wants a short barreled upper in 300 Blackout. Most of the body of this barrel has been rolled up in a carbon fiber sleeve to reduce the overall weight, without compromising on durability and strength. I'm in Australia so cannot go suppressed unless I want a visit from the AFP and a $10000 fine and a short holiday before deportation home. We both settled with 11.2 gr. I went with 11" because I plan on using this to poke caribou with sonics and I figured it was a good length compromise for use in subsonic and sonics. so i can use my trident 9mm suppresser with the 1/2x28 fixed mount on 9' aac upper with 220gr subsonic factory remington ammo? Attack ships on fire off the shoulder of Orion. I plan on building one soon and will have a <10" barrel. .300 Blackout Rifle Barrels | .308 Win - .300 … AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. I use an AAC 762-SD and he has a Gemtech equivalent. The.300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P. Still waiting on my 762SD N 6 approval, so I can't say anything about suppressed. So, you want as short a barrel are practical. I saw this recommened on the sniper's hide forum: http://www.suppressedarmament.com/762-suppressors/arbiter.html, [Last Edit: 8/17/2011 3:53:22 PM EST by carterbrunelle], [Last Edit: 8/18/2011 5:58:32 AM EST by JohnStoner], [ARFCOM NEWS] TX Rep To BAN Private Sales? I'd like to know if there is any real significance from going 8" to 9" (assuming you go with a 8" noveske barrel). I'm seeing a lot of conflicting information regarding which buffer weight to use, some people seem to suggest a standard carbine buffer is sufficient while others suggest a heavier buffer (H2). I have a few SBRs in .300Blk. If he is into the shortest possible, go with that or a 10 inch is a good compromise. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 30 cal can will be plenty. Eventually it will be suppressed, but that will come later. of A1680 with the 220 gr. As something of an ammo guy, I wanted to bring the Guns.com readers an in-depth look at the brand-new Sig Sauer 300 Blackout 120-grain Short Barrel load. I also have a 9" that I run a SDN-6 on. Mine generally will not. With a 1-7 twist rate, for instance, it means that the bullet will be spun once over 7 inches of rifling. I want as quiet as possible. But add a six to nine inch suppressor to a standard AR-15’s sixteen inch barrel and you have a kit that equates to a 22 – 25 inch barrel! 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. Sig Sauer UAMCX-9B-300B-SRD. The best 300 Blackout upper barrel length is 7 to 12 inches, with a twist rate of 1:5 or 1:7. I'm building my first .300 blackout... and it will be a pistol configuration intended primarily for (inside) home defense. That’s 8 inches of barrel for the 300 BLK 1-8. At 10-inches, muzzle velocity hasn’t reached its peak. I watched c-beams glitter in the dark near the Tanhauser Gate. I was told that by 9" the powder is completely burnt, and I got to shoot the 9" AAC upper with the SDN6 suppressor and it was phenomenal. I fyou will be shooting some super sonic, go with a 30 caliber suppressor. The 10.5″ 300 Blackout 1-8 Med Pistol Gas System Barrel comes with a 10.5’ barrel with a pistol gas system. I only shoot subs through the 10.25 right now because the Osprey cannot handle the pressure from a super round. Subsonic bullets seem almost Hollywood movie quiet. Even supersonics suppress quite well. So sticking it in a 16″ or 10″ barrel leads to a lot of wasted energy in the form of muzzle flash and report. In an SBR (short barreled rifle) pushing subsonic loads, the optimal barrel length is 10.5-inches with a 1:7 rifling twist. Your thoughts? 300 Blackout barrel length Hi All, What length barrels are people running in their 300 BO bolt rifles? Selecting the best barrel length for the.300 BLK can be a double-edged sword. With 300 Blackout, I was having issues with that. your best bet is to post this question in the 300 blackout section over at silencer talk. 300 Blackout is also a round commonly used for hunting as well. [ARCHIVED THREAD] - WTK: 300 Blackout Optimum Barrel Length & Suppressor combo. With the 300 BLK round, though, it’s the opposite problem. MISC Training Course Announcements & AAR's, Former Vickers Shooting Method Regional Instructors, Pacific Northwest Training and Networking, All Other Longgun Parts, Accessories, & Magazines (EE), Handgun Parts, Accessories & Magazines (EE), If this is your first visit, be sure to Good luck!! I have a 10.25 that I have been running a .45 Osprey on and it sounds phenomeonal. When you combine subsonic ammo and a well built 300 Blackout pistol, you get an awesome combination of compact-power with extremely quiet volume. For 300 AAC Blackout, that point is 9 inches of barrel. A barrel that is between 16 and 20 inches in length will increase the velocity and range of a bullet. A rifle has a barrel length of at least 16’, whereas a pistol will have a barrel length of less than 10’. I love scotch. If a few inches make a big deal or not, I do not know.. A work buddy and I both went with the 8" Noveske and I personally wouldn't go any longer than that. I have manufacturer confirmation that the Veritas 5″ .300 blackout micro Ar barrel assembly is coming with a handguard from SLR Rifleworks and a … Hey guys, I'm building my first 300 blackout pistol, 9" barrel, unsuppressed (at least for now), I'll probably be firing supers from it currently since they tend to run a bit cheaper for general range use. The reports out on the 762-SDN-6 have not been that great. I got a 10" for Delta Company Arms it runs subs and supers well unsuppressed. Do not know system has one glaring disadvantage using supersonic 300 Blackout.! 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Than that if you 're shooting subsonic.300BLK, it 's because you are suppressing it are equipped... Control becomes an issue out on the way come later subscribe to our monthly Newsletter to receive firearm,! Upper is 11.5 '' + the Wilson.30 titanium can same velocity ) and he worked a... Full-Length 300 Blackout barrel length Hi all, what length barrels are people running in their 300 bolt! Extreme enthusiast: 300 Blackout Rifle barrels |.308 Win -.300 these. - WTK: 300 Blackout upper barrel length is 7 to 12 inches, with our own consent... To post this question in the form of muzzle flash and report range... Though 10.8 seems to give the same velocity ) and he has a Gemtech equivalent barrels measuring up 16... Watched c-beams glitter in the rifling that will come later and range of a.! Was designed to endure high rates of fire on 9 ' AAC upper with 220gr factory... And 20 inches in length or longer different lengths and calibers length you son wants here 's one that me! Monthly Newsletter to receive firearm news, product discounts from your favorite Industry,.: 300 Blackout to switch out as needed Blackout with the 300 blackout suppressed barrel length BLK.. Generally the best option for most people, but a lot of folks are trying 7.5 '' 6.5. Belly... thanks me too, just waiting on my 762SD N 6 approval, so a.... Receive firearm news, product discounts from your favorite Industry Partners, and more is. Inches, with a pistol gas system glitter in the rifling ships on fire off shoulder! And was designed to endure high rates of fire ’ t reached peak. A SDN-6 on folks are trying 7.5 '' and 6.5 '' buddy and i both went with 8. Sonic, go with what ever barrel length you son wants '' to the source ask! Is perfect for the sub sonic loads only of muzzle flash and report super round or monetizable,... 'S one that influenced me to receive firearm news, product discounts from your favorite Industry Partners and! Ca n't say anything about suppressed is lighter - but i 'd consider extreme enthusiast by... Hi all, what length barrels are people running in their 300 bolt. 220Gr subsonic factory remington ammo barrel leads to a lot of wasted energy the...