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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. Y

    300 AAC Blackout lot sale

      1. For Sale
    • Portland
    • Oregon
    Hello Everyone, I'm selling a bulk of ammo that I'm looking to get rid of. Pricing follows below along with attached pictures! PRICES NEGOTIABLE, throw me an offer no shame here Will deliver up to 30 miles out from Portland, and will deliver further out (All Oregon, Washington, and even Idaho)...
  2. notgarandthumb

    Noveske 10" 300BLK pistol

      1. For Sale
      2. For Trade
    • $1850
    • Horseshoe Bend
    • Idaho
    Looking to sell or trade my Noveske 300BLK. Sort of a mix of a Johnny Rifle and a DEVGRU clone, with some extra upgrades over either of those. Really looking for a SIG Rattler LT/SPEAR LT as a trade, but would consider other non-AR15 300BLK pistols. Yes, I will add cash if appropriate! Magpul...
  3. Big-Tex

    Ruger Mini-14 300blk

      1. For Sale
    • $949
    • Bend
    • Oregon
    Bought this to be different, I didn’t want another AR platform, but it’s just not doing it for me. Runs supers just fine, but subs are finicky. Includes 4 factory magazines, Samson scout rail with T-1 mount. Currently has a Holosun ARO green dot mounted, this will be included because it...
  4. R

    Sold- Radical Arms upper with 10" handguard and buis

      1. For Sale
    • $100
    • PORTLAND
    • Oregon
    Radical Arms takeoff Upper and handguard with buis only. Full length pic rail. Rail uses Magpul MOE accessories (or adapters). No barrel, BCG or CH. $100
  5. 762x39

    300 Blackout Once Fired Brass

      1. For Sale
    • $15
    • Newberg
    • Oregon
    I have 51once fired brass. Mixed brands. No conversions $15 Willing to ship, add $12.50 USPS Priority Please PM me if you have questions.
  6. TJ304

    Brass: 458 SOCOM and 300 Blackout (BLK)

      1. For Sale
      2. For Trade
    • $4
    • Lake Grove/Lake Oswego
    • Oregon
    Small amount of these, but rare enough that I thought someone might need them. 1. 14 pieces of 458 SOCOM $4 2. 25 pieces of 300 Blackout $4 Meet at Bass Pro (formally known as Cabala's) for pick up
  7. gdog426654996

    300 blackout with sig optics unfired

      1. For Sale
      2. For Trade
    • $650
    • Winchester
    • Oregon
    I have an unfired 300 blackout AR-15. Anderson lower with PSA 300 blackout upper. Romeo MSR with Juliet 3. Swing out! Magnifier. Magpul bad lever And PSA enhanced polish trigger. I am a very motivated seller. Make me an offer Possible trade interests Anything Colt Anything H&K except modern...
  8. gdog426654996

    300 blackout with sig optics

      1. For Sale
      2. For Trade
    • $650
    • Winchester
    • Oregon
    I have an unfired 300 blackout AR-15. Anderson lower with PSA 300 blackout upper. Romeo MSR with Juliet 3. Swing out! Magnifier. Magpul bad lever And PSA enhanced polish trigger. Possible trade interests Anything Colt Anything H&K except modern 22LR Calico CASH IS KING 👑
  9. Akfromportland

    Hornady Black 208 gr AMAX .300 Blackout

      1. For Sale
    • $1000
    • Clackamas
    • Oregon
    970 Rounds of Subsonic Hornady Black 208 gr AMAX .300 blackout ammo. Loose rounds all from the same lot, will come with the .50cal ammo can! No trades.
  10. Akfromportland

    Hornady Black 208 gr AMAX .300 Blackout

      1. For Sale
    • $970
    • Clackamas
    • Oregon
    970 Rounds of Subsonic Hornady Black 208 gr AMAX .300 blackout ammo. Loose rounds all from the same lot, will come with the .50cal can! $970 Firm No trades.
  11. Colin_Shots

    KAK Industry Complete (mostly) 300 blk Upper - No BCG or CH

      1. For Sale
    • $300
    • Portland
    • Oregon
    Mostly complete KAK Industry 300 blackout upper w/ 8.5" barrel and adjustable gas block. $300, and would prefer a local sale around PDX, but may consider shipping. About 100 rounds through it. I have decided to simplify my calibers and just stick with 556 for my ARs moving forward. Here are the...
  12. GunShy

    Daniel Defense PDW 300BLK Complete Upper Package

      1. For Sale
    • $800
    • McCall
    • Idaho
    Selling a factory Daniel Defense PDW complete upper in 300 Blackout. It includes the original Daniel Defense charging handle and BCG, plus an extra red spring and a Maxim CQB buffer tube. Everything is in excellent condition with fewer than 330 rounds fired. Asking $800. No trades.
  13. unionguy

    Subsonic 300 Blackout

      1. Want to Buy
    • Gladstone
    • Oregon
    I'm looking for small quantities of 300 Blackout in Subsonic to try out in my 2 platforms, in the 20-60 rounds range. If you got some laying around you don't want anymore, let me know what you have and what you'd want for it. thanks!
  14. Userone

    1.5k 220gr .308 Bullets

      1. For Sale
    • $225
    • Bremerton
    • Washington
    Purchased 2k of these. Only needed 500 of them. I paid $80 for each 500 count and an additional 65 for tax and shipping.Im asking $225 for 1,500 with free shipping. https://cdvs.us/product/300-acc-blackout-220-grain-tmc-flat-base-plated-ball-bullets/ Free shipping for the lot. Buyer covers...
  15. Userone

    Unopened 3lbs CFE BLK

      1. For Sale
    • $150
    • Bremerton
    • Washington
    Unopened CFE BLk. 183.42 from sportsmans will take 150.00. If you have any questions please don't hesitate to ask.
  16. Dalshakkamel

    300blk complete upper 8 inch

      1. For Sale
    • $400
    • Gresham
    • Oregon
    Just don’t use it as much as I thought i would. Maybe 80 rounds through it. Everything was put together by me and following manufacturer torque specifications with anti-seize grease, and blue locktite. The build is Spikes Upper receiver Ballistic advantage 8” barrel .750 gas block CMC...
  17. tunapackets

    PSA .300blk 10.5 Hex Mlok Upper

      1. For Sale
    • $50
    • EUGENE
    • Oregon
    Comes with a Sprinco Yellow for suppression, flash hider needs a new crush washer I have .300blk pmags to sell No shipping or travel
  18. C

    Subsonic 300blk 200gr

      1. For Sale
    • $150
    • Happy Valley
    • Oregon
    Have 2 cases of Winchester 300BLK subsonic ammo. 200 rounds per case. 1) Winchester Whitw Box - 200gr subsonic open tip 2) Winchester Super Suppressor - 200gr subsonic open tip Asking $150.00 each
  19. diddy_oil

    Radian model 1 300blk setup

      1. For Trade
    • Parkdale
    • Oregon
    Radian model 1 8.5" receiver set in Radian brown, Sig 9" 300blk barrel with 1/5 twist (came off m400 pistol), PWS FRC2 muzzle brake(plan b/Rearden mount), Superlative Arms adjustable gas block, Emissary handbrake mini, HBPDW brace, Geissele SD-C flat trigger and a Magpul K2 grip. I put a picture...
  20. dmmv

    Redacted

      1. For Sale
      2. For Trade
    • $11
    • NW Portland
    • Oregon
    Redacted
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