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300 blackout

The .300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P.), also known as 7.62×35mm is a carbine cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. Its purpose is to achieve ballistics similar to the 7.62×39mm cartridge, or even more similarly, the 7.92×33mm Kurz cartridge in an AR-15 while using standard AR-15 magazines at their normal capacities. Care should be taken not to use 300 BLK ammunition in a rifle chambered for 7.62×40mm Wilson Tactical.

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Recent contents
  1. infantry503

    AAC 300blk 16" with Knights Armament URX 2 rail

      1. For Sale
      2. For Trade
    • $900
    • Beaverton
    • Oregon
    Like the title says I have an AAC 300 blackout upper ready to be suppressed. I have not shot this so the round count is zero. Advanced Armament Co. AR-15 Flat-Top Upper Assembly 300 Blackout (7.62x35mm) 1:7" Twist 16" Barrel with KAC URX II Modular Free Float Quad Rail Handguard with Integral...
  2. D

    Bravo Co BCMGUNFIGHTER Compensator MOD 1 - 7.62 / 300 Blackout

      1. For Sale
    • $60
    • GRANTS PASS
    • Oregon
    Bravo Company BCMGunfighter Mod 1 30 cal compensator. Good used condition, some wear (that's not rust!). $60 FTF. $65 shipped. Trades considered, currently looking for: 22lr match ammo 6.5mm match bullets Lyman 457132 mould, other moulds suitable for 45-70 Machinist tools Silhouette targets or...
  3. arjunki

    300 Blackout 16" Upper Receiver with Bolt Carrier Group and Charging Handle, Cerakoted Barrel

      1. For Sale
    • $425
    • Beaverton
    • Oregon
    $425 New Unfired Two Tone 16 inch 300 blk upper receiver with new bolt carrier group. M16 Carrier Style Standard Platform AR-15 Bolt, Finish Black Nitride, Bolt Material 9310 Steel, Carrier body Carpenter 158® steel, Finish Black Nitride, Gas Key Staked, Magnetic Particle Inspection "Yes"...
  4. SIG34

    Noveske CQB 10.5in Gen3 300blk upper

      1. For Sale
      2. For Trade
    • $1500
    • Monroe
    • Washington
    Noveske Gen3 upper Factory built with box & paperwork Brand new unfired - 10.5in Stainless - 1/7 twist 300blackout - Q cherry bomb Muzzlebrake - Noveske Ambi charging handle Looking to trade for : - Daniel Defense Mk18 - SOPMOD block2 14.5 upper sorry no shipping, local sale only
  5. Roymil

    Sig Bravo4 .300Blk

      1. Want to Buy
      2. Want to Trade For
    • Aurora
    • Oregon
    I'm looking for someone with a Sig Bravo4 prism optic they can live without. This is a discontinued optic and can't be bought new without paying quite a premium so used is really my only option. Needs to be in good condition and realistically priced. Cash, could possibly offer some ammo in trade...
  6. T22

    PRICE DROP Bushmaster ACR - 5.56 and 300 Blackout barrels

      1. For Sale
    • $3200
    • Sherwood
    • Oregon
    Up for sale is a basically new Bushmaster ACR. MLOK rail with 16 inch barrels, 300 BLK has the AAC 51T, 5.56 came without a muzzle device and I never installed one. Ambi charging handle, JPE reduced power trigger springs, custom Radian Talon 45° safety. All original parts, Magpul 300BLK PMAG...
  7. Gks

    7.62x39

      1. For Sale
      2. For Trade
    • $250
    • Falls City
    • Oregon
    Have 1000 Rounds of tula like to trade for 5.45 or 300 blackout does not have to be all 1000 I'll split the difference. Also have cash if your looking to off bulk.
  8. Skier

    300 Blackout AR Pistol Cycling issue

    Hey all, I'm curious about people's expectations for 300 Blackout AR pistols and cycling various rounds of different weights... Here's the basic history: Built my own lower (functions great, no issues) Bought a fully assembled 300 Blackout upper with a 10.5" barrel and carbine length gas...
  9. SIG34

    AAC R700 300blk with Nightforce

      1. For Trade
    • $1400
    • Monroe,
    • Washington
    AAC Remington 700 tactical (Brand new Unfired) - Bull barrel threaded - 300blk 1/7 twist 16.5in - McMillan MC3 tactical Stock (Deluxe Black Carbon fiber) - Nightforce SHV 3-10x Moar reticle - Vortex heavy duty match rings - Leupold scope base - Tactical bolt knob Looking to trade for ...
  10. SIG34

    Remington 700 AAC 300blk

      1. For Sale
    • $1800
    • Monroe,
    • Washington
    Remington 700 AAC (brand new Unfired) - 300blk - 16.5in threaded barrel - McMillan MC3 Carbon fiber - Leupold scope base - Tactical bolt knob - original Hogue stock The best suppressor host you can buy, Really hard to find! Scope & Rings : Nightforce SHV Scope - Non-illuminated - Moar...
  11. winchester270

    300 Blackout upper

      1. For Trade
    • McMinnville
    • Oregon
    I have a palmetto state armory 300 blackout upper with a 8.5" barrel and a flash can. Along with a M-lok free float handguard. It has about 100 rounds down range and has shot 2" groups at 100 yards. I am mostly looking to trade for another 300 blackout upper, that is just a bit shorter in...
  12. ELRShooter

    300 Blackout Ammo Trade

      1. For Trade
    • Salem
    • Oregon
    I have 235 rounds of Fiocchi 150 grain FMJBT. 4 full 50 round boxes and 1 partial. Looking to trade for a 200 round ammo can of the Hornady 110 grain #80876. Cost is about the same, but I can add a box or two of another caliber if it makes the deal work for you. Not looking to sell, only...
  13. wthjmj

    Powder and Primers and Projectiles, Oh My...

      1. For Sale
    • $3000
    • Tigard
    • Oregon
    I'm clearing out my reloading supply. UPDATED FREQUENTLY: Feel free to haggle over individual items, or take it all for $1000. If it's scratched out, it's gone. Cash Only, Local Pickup Required. Trades welcome for Fully Assembled X-Carve (750-1000mm preferred). Call or Text to...
  14. wthjmj

    Dillon 650 Fully Loaded

      1. For Sale
    • $2900
    • Tigard
    • Oregon
    NEVER USED, most parts still in original packaging. Purchased for $3320 total, but will sell for $2900 Or Best Offer. Cash only, Local Pickup Required. Trades welcome for low milage 2001 Cherokee Sport or Fully Loaded 1000mm X-Carve. If you're more interested in components, see here: For Sale...
  15. R

    9mm

    • Seattle
    • Washington
    Looking for ammo. Grain & brand. COD Thanks!
  16. dbg19

    8.5" 300 Blackout AR Pistol

      1. For Sale
      2. For Trade
    • $650
    • Salem
    • Oregon
    8.5" 300 Blackout AR Pistol Components: CMMG Barrel, 8.5", 1:7 twist, 300 Blackout BCM Upper Receiver w/ Laser T-markings, Dust Cover, Forward Assist MAS Defense 7.5" M-Lok Handguard Seekins Precision Low Profile Adjustable Gas Block CMMG Lower Parts Kit Smith & Wesson M&P Bolt Carrier Group...
  17. L

    Faxon ARAK 21 upper w/ 20” 5.56 & 16” 300blk barrel assemblies

      1. For Sale
    • $800
    • Forest Grove
    • Oregon
    Here we have a Faxon ARAK 21 upper receiver with two barrel assembly units. One 20” heavy barrel in 5.56 and one 16” medium barrel in 300 blackout. Both barrels and have about 200 to 300 rounds through them. This is a great little package if you have an extra lower receiver hanging around. The...
  18. dbg19

    300 Blackout 8" Upper -OR- Complete 300 Blackout Pistol

      1. For Sale
      2. For Trade
    • $500
    • Salem
    • Oregon
    For Sale: 8" 300 Blackout Upper Or Complete 300 Blackout Pistol CMMG Barrel, 8" 300 blackout, 1:7 twist BCM Upper Receiver w/ Laser T-Markings, Dust Cover, Forward Assist Midwest Industries 7" M-Lok Free Float Handguard Seekins Precision Low Profile Adjustable Gas Block w/ set screw CMMG Lower...
  19. P

    300 blackout upper

      1. Want to Buy
    • Spokane
    • Washington
    want to buy 300 blackout upper! New or used in good condition. 7-8inch barrel. Aero Precision quality or better. With or without BCG/CH. Prefer PayPal for payment.
  20. 40Garand

    NIB Noveske KX3 Flash Suppressor 30 Cal

      1. For Sale
    • $100
    • Philomath
    • Oregon
    Brand new never mounted, details visible in photos. Purchased from Brownells for a build that ended up using a Q Cherry Bomb. Local members are welcome to come to Philomath for a face to face. I'll ship USPS insured with tracking (where legal) in the lower 48. $100 cash F2F gets it done or $112...
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