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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 an intermediate 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. 300 BLK ammunition cannot be used in a rifle chambered for 7.62×40mm Wilson Tactical.

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Recent contents
  1. Userone

    1 LB of CFE BLK

      1. For Sale
    • $35
    • Bremerton
    • Washington
    1 lb of CFE BLK purchased Spring of 2022 I intended on using it for 300 blk supers but ended up using lil gun since I got it in bulk 35 f2f Sorry no trades Pm me with any questions
  2. dmmv

    Vltor MUR (sold)

      1. For Sale
      2. For Trade
    • $180
    • NW Portland
    • Oregon
    Vltor sold
  3. bmiller21

    300 BO supersonic

      1. For Sale
    • $140
    • Monmouth
    • Oregon
    Looking to trade supers for subs of 300 BO. S&B 124gr, 140 rounds total. Feel free to message me, willing to consider cash as well if not wanting to trade for 300 BO supers
  4. TylerRitts

    10.5" Complete 300 black out

      1. For Sale
    • $500
    • Eugene
    • Oregon
    10.5" 300 blackout pistol PSA .300 blackout upper Milsport complete lower Shockwave Gen 2 brace Wilson Combat extended bolt release 1 30 round hex mag 30 rounds of mixed .300 blackout Only shot about 50 rounds through it. It cycles and functions perfectly. Some very very minor scuffs from...
  5. TylerRitts

    10.5" .300 black out

      1. For Sale
    • $550
    • Eugene
    • Oregon
    10.5" AR-15 pistol chambered in .300blk. Features a US made Palmetto State Armory complete upper and a US made Milsports lower. It has a Shockwave Technologies Gen2 Blade brace that's also made in the US. I have ran about 100 rounds through it and it shoots very well and very smooth. If...
    • Classified Ad in Handgun Classifieds
    • TylerRitts
    • .300 black out .300 blackout 10.5" ar-15 milsport palmetto state armory subsonic suppressed wilson combat
    • Replies: 4
  6. PNguyen

    Ruger American Ranch .300 Blackout

      1. For Sale
      2. For Trade
    • $550
    • Tacoma
    • Washington
    Brand new, haven't put any rounds through it yet. This is the updated version that takes AR style mags. Will come with original box, papers and 10rd pmag. Open to trades for other rifles, optics, or 7.62x39 ammo. Not interested in handguns. Meet at any Pierce county FFL, buyer pays fees...
  7. dmmv

    300blk Upper for sale

      1. For Sale
      2. For Trade
    • $850
    • NW Portland
    • Oregon
    16” 300 blackout upper
  8. NW PREPPER

    Palmetto State Armory 8.5in .300 AAC Complete Upper

      1. For Sale
    • $575
    • Rockaway beach
    • Oregon
    This is a 8.5in barrel with a 10.5in handguard. Less than 100rds through it. Includes the following: Charging handle Bolt carrier group Vortex Sparc II Red Dot Magpul sling mount Magpul angled foregrip *Does NOT include mounted optic or flashlight.
  9. chipotle

    WTS/WTT: .300 AAC Blackout Supersonic Ammo Lot - Ammo Inc., Sig Match

      1. For Sale
      2. For Trade
    • $200
    • Vancouver
    • Washington
    For Sale or Trade: 430 230 rounds total of .300 AAC Blackout ammunition, mix of supers and subs supersonic (all brass case). First, the goods... SUPERSONICS: Sig OTM 125gr supersonics: 210 170 rounds (one box has ten inside). Ammo, Inc. 110gr Hornady VMAX supersonic: 60 rounds SUBSONICS...
    • Classified Ad in Ammunition Classifieds
    • chipotle
    • .300 blackout 300 aac blackout 300 blackout ammo inc ammunition subsonic supersonic
    • Replies: 3
  10. toddhastie

    Barnaul 300 AAC Blackout FMJ 500 Rounds

      1. For Sale
    • $200
    • Corvallis
    • Oregon
    500 Rounds Fresh Barnaul 300 BLK Ammo Poly coated Steel Case 145 Grains
    • Classified Ad in Ammunition Classifieds
    • toddhastie
    • .300 blackout 300 aac 300 aac blackout 500 rounds barnaul fmj ammo steel case target ammo
    • Replies: 9
  11. rjones715

    .300 Blackout 10.5" Barrel - Complete Build

      1. For Sale
    • $1750
    • Bend
    • Oregon
    This is pretty much new. Maybe five rounds have been fired through it. I may even be able to sell some ammo on the side to the buyer. I will list out the bulk of what I know. Buyer to pay all necessary transfer fees. If you have a question on something, I have hyperlinked as many parts as I can...
    • Classified Ad in Rifle Classifieds
    • rjones715
    • .300 blackout 10.5" 300 blackout eotech eotech xps2 timber creek
    • Replies: 0
  12. papersoldier

    150 rounds (3x 50rd boxes) MagTech 123gn FMJ .300 Blackout

      1. For Sale
    • $100
    • Clatskanie
    • Oregon
    For sale is three 50 round boxes of MagTech 123gn FMJ .300 Blackout. Asking $100. Not looking for any trades at this time. Can meet in Clatskanie.
  13. papersoldier

    8 boxes of Hornady .300 Whisper/Blackout

      1. For Sale
    • $100
    • Clatskanie
    • Oregon
    For sale is 157 rounds of Hornady brand .300 Whisper / Blackout. 6 boxes are subsonic 208gr AMAX and 2 boxes are supersonic 110gr V-MAX. One of the 208gr boxes is light 3 rounds. Asking $100 for all of it. Not looking for any trades at this time. Can meet in Clatskanie.
  14. Gundolf

    .300 Blackout Side-charger Package

      1. For Sale
    • $575
    • Sherwood
    • Oregon
    Up for sale is a .300 blackout Pistol Package BCA gen 1 side charger with Barrel length of 8.5 Anderson Lower Urban camo finish (rattlecan job nothing fancy) Comes with 200 rounds of fiocchi 150 grain brass case ammo 2x magpul 30 round magazines Selling in order to make room in the safe...
    • Classified Ad in Handgun Classifieds
    • Gundolf
    • .300 black out .300 blackout anderson bca bear creek arsenal package side charger
    • Replies: 1
  15. Roymil666

    A bit of 223/556 and 300blk subs

      1. For Sale
    • $240
    • Aurora
    • Oregon
    Ideally I'd like to sell this all as a bundle in one go. $240. 3 boxes of American Eagle 223 FMJ. 1 box of PMC 5.56 X-TAC 55gr FMJ. 1 box of Winchester 5.56 55gr FMJ. $12 box by itself...
  16. rugerlover

    Another Price Drop!! Awesome Aero Custom Build 12.5' 300BO

      1. For Sale
    • $1100
    • Battle Ground
    • Washington
    I have a super clean custom build I did a while back and like most of my guns it just doesn’t get used as I’d like so I’ll pass it along to the next lucky guy. It’s a Aero M4E1 upper and lower Aero Nitrate BCG Radian Charging handle SB3 brace Yankee Hill Machine Quad rail the VG6 gamma 300...
  17. kasuk

    Aero Precision 300blk Barrel & Ammo // VG6 Gamma w/ Blast Cage // Monstrum 30mm Mount

      1. For Sale
      2. For Trade
    • $1
    • Renton
    • Washington
    Aero Precision 300Blk Barrel. 10" Seen just shy of 300 rounds Includes Gas tube & 80 rounds of 300Blk $190 VG6 Gamma Muzzle Brake w/ Blast Cage for 5.56/223 1/2x28 $75 Monstrum Slim Profile Series Cantilever Offset Dual Ring QR Scope Mount 30mm Trade for 30 Round Pmags
  18. A

    300 blackout 220 grain Berry’s with CFE Black

    For starters, I am new at reloading. I have done a ton of research on subsonic load data. Which powders are best. Which primers, etc. I ended up starting a load using Berry’s 220 grain with CFE BLK and CCI #400 SRP. Here’s my question plus explanation for the group (and it might be long...
  19. C

    BCM mk2 12.5 -300 blackout upper - New

      1. For Sale
    • $650
    • Snohomish
    • Washington
    New BCM® MK2 Standard 12.5" 300 BLACKOUT Upper Receiver Group w/ MCMR-10 Handguard BCM URL for reference. https://bravocompanyusa.com/bcm-mk2-standard-12-5-300-blackout-upper-receiver-group-w-mcmr-10-handguard/ Buyer pay shipping.
  20. J

    .300 BLACKOUT 90 Rounds Fiocchi, PPU HP, Sellier & Bellot Cheap

      1. For Sale
    • $70
    • Portland
    • Oregon
    Hey everyone, for sale is 90 rounds of .300 blackout ammo. 50 Rounds of Fiocchi FMJ, 20 rounds of PPU Hollow Point, & 20 Rounds of Sellier & Bellot FMJ. Found these lying around and don't have a firearm capable of shooting them currently. If you have any questions please comment below. I've...
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