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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.

View More On Wikipedia.org
Recent contents
  1. dude23

    RIFLE & PISTOL Powders, Primers, Bullets .223 / 9mm & RCBS Rockchucker Supreme Reloader

      1. For Sale
    • Portland
    • Oregon
    RELOADING SUPPLIES FOR SALE Prices were adjusted from various online sources. Make a reasonable offer. Most of the components were bought from 2016-2020 and stored in a temperature controlled environment. Primers were stored in a sealed ammo can with desiccant packs. Powder: Winchester...
  2. Gun Stuff

    Savage Axis .300 Blackout 16 Threaded Camo Stock with Scope

      1. For Sale
      2. For Trade
    • $325
    • Springfield
    • Oregon
    Savage Axis .300 Blackout with a 16” barrel threaded at 5/8x24 for a suppressor. Bushnell Banner 3-9x40 scope. I bought this rifle new. It has about 40 rounds through it. Like new condition. Only trades would be for 6mm ARC or 6.5 Grendel uppers or full AR-15 style rifles in these calibers.
  3. D

    TACTICAL KINETICS 12.5 INCH AR-15 300 BLACKOUT MELONITE BARREL

      1. For Sale
    • $100
    • Canby
    • Oregon
    Barrel is like new. Around 50rds down the pipe and I decided to go with a different set up all together. The 50rds that I shot out of it functioned as it should have. Here is the link to the site that I bought it...
  4. notgarandthumb

    SIG Rattler 5.5 Kit 300BLK

      1. For Sale
    • $1200
    • Newberg
    • Oregon
    I have a brand new Sig Rattler 5.5" conversion kit in 300BLK. I've never shot it and hate seeing it sit. It includes the complete upper and the stock pic rail knuckle. I also have a sig pro trigger and a triggertech MCX trigger I want to sell, and the stock, deltapoint pro and holosun laser are...
  5. Markhofstetter

    Polymer80 lowers lot

      1. For Sale
    • $800
    • Milwaukie
    • Oregon
    Looking to preferably sell all together but will to piece out as well if needed. Brand new in box complete with jigs: (2) PF940v2 Standard frame in Black compatible with the Gen 3 of Glock 17, 17L, 34; 40 Smith &Wesson G22, 35, 24; .357 Sig G31. (2) PF940C Compact frame in Gray compatible with...
  6. DraguNovice

    300BLK 7.5" pistol with SB4 brace, 190 rounds, 4 300blk specific Pmags and Sig Romeo MSR red dot

      1. For Sale
    • $650
    • BEAVERTON
    • Oregon
    Selling my 300blk pistol with extras. - Milspec buffer tube, BCG, and charging handle. - PSA M-lok railed upper with built-in QD attachment point and fan port compensator. - Magpul MOE grip and trigger guard. - SB4 brace - PSA milspec 7075-T6 lower with standard FCG. - 190 rounds of ammo: 170...
  7. JV87

    PSA Jakl 8.5" 300BO

      1. For Sale
    • $800
    • Beaverton
    • Oregon
    Selling my PSA 300BO Jakl in 8.5" Has 2 mags through it (60 rds). Built a different setup and don't need to keep this. Comes with the following attached: - Deadair break - Phase5 bolt release - Extended mag release - Magpul trigger guard - Ergo grip. $1000 $900 $800 meet in Beaverton, buyer...
  8. FATAL125

    WTS: WOLF 300blk

      1. For Sale
    • $120
    • Moses Lake
    • Washington
    Selling off a small batch. 300blk - 240 rounds - $120.00 - Wolf steel case FMJ 145gr. Cash, Venmo, PayPal (friends and family only). Shipping available at buyers expense.
  9. officially5150

    Price drop 10.5" 300 blackout pistol with eotech and upgrades

      1. For Sale
      2. For Trade
    • $1000
    • SALEM
    • Oregon
    Selling an ar15 pistol chambered in 300 blackout Specs are Odin works 10.5 with matching 0.750 adjustable gas block (60rnds fired) Aero precision lower Fail zero bolt carrier group Sig sauer mcx grip Ratchet lock buffer tube nut and end plate with qd mount (eliminates the need to stake) Eotech...
  10. FATAL125

    300 Blackout - steel cased - 240 rounds

      1. For Sale
    • $150
    • Moses Lake
    • Washington
    Factory new 240 rounds steel cased Wolf Asking $150.00 for all local. $170.00 shipped via UPS Cash, PayPal (friends & family), Venmo, or Zelle
  11. mx5jacob

    Ultra Compact 300blk AR Pistol

      1. For Sale
    • $1000
    • Florence
    • Oregon
    Well I've been debating selling this for a couple years now and I've finally decided to see if I could find a home for it. I just don't use it much. I've put maybe a couple thousand rounds through it at most. Almost all were subsonic. It has been completely reliable with both subs and supers...
  12. ScottInPDX

    WTB: Small quantities of subsonic 300 BO

      1. Want to Buy
    • Tualatin
    • Oregon
    I'm switching a rifle over to 300BO, and I want to try a couple of different factory loads to see which ones work best for it. I'm looking to buy 20-60 rounds of subsonic, no remans, steel case is fine. I'll pay cash and pick up in person from Wilsonville to Portland near I5. I'll consider...
  13. Userone

    Lee Loadmaster and accessories

      1. For Sale
      2. For Trade
    • $100
    • Bremerton
    • Washington
    For sale is my used lee load master. I purchased it 3 years ago and put 30-35k rounds through it. The reason I'm selling it is to upgrade to a 10 stage press. The press is functional however it has some qurkes so I would recommend it for parts or as a secondary press. It has ufo lights...
  14. aasbra

    Lee 300 BLK die set

      1. For Sale
    • $30
    • Tigard
    • Oregon
    Lee 300 BLK 3 die set, plus shell case trim kit. Appears to be unused. $30, meet FTF around Tigard/Tualatin area or will ship if buyer covers cost.
  15. ScottInPDX

    WTB: 20 and 30 round 300BO AR Mags

      1. Want to Buy
    • Tualatin
    • Oregon
    Looking to build a stash of 300BO AR mags. Mainly interested in Magpul, Lancer, and D&H. Will consider others, but not interested in ProMag, HexMag, or Hera.
  16. M

    300 blackout upper

      1. For Sale
      2. For Trade
    • $350
    • Kelso
    • Washington
    300 blackout upper, adjustable gas block, 10-in barrel, 40 or 50 rounds through it. Runs fine with my osprey on it. Comes with all the ammo in that can. 120 to 140 rounds.
  17. WIN308

    Best deal on upper in 556.

      1. For Sale
      2. For Trade
    • $280
    • Hillsboro
    • Oregon
    I have one upper for sale. It's pretty sweet but I want to fund a different project! It's a spikes tactical upper receiver, All black, chambered in 556, has quad-rail handguard, 11.5" barrel. I added the strike industries King comp to go with the "Oppressor" blast shield. $280 OBO Trades...
  18. WIN308

    Best deal on AR Uppers 556,300BLK

      1. For Sale
      2. For Trade
    • $220
    • Hillsboro
    • Oregon
    MOVED TO CLASSIFIED, AR PARTS.. I have two uppers for sale. They're pretty sweet but I want to fund a different project! Also, check my other post for the springfield VHS-2 (Hellion) bullpup rifle. First upper: It's a spikes tactical upper receiver, All black, chambered in 556, has quad-rail...
  19. A

    Knight's Armament SR-30 9.5" Complete Upper Receiver - BNIB **Price Reduced**

      1. For Sale
    • $2695
    • Tigard
    • Oregon
    Selling a brand new-in-box KAC SR-30 9.5" Complete Upper Receiver w/new E3.2 bolt and ambi charging handle. Recently discontinued and had an unexpected backorder filled. Asking $2,695 - not looking for trades at this time.
  20. L

    SOLD - AMMO INC 300 Blackout, 200 rds for $100

      1. For Sale
    • $100
    • Canby
    • Oregon
    For Sale: Ammo Inc 300 Blackout, 200 rounds with can, 110gr V-Max $140 FTF in Canby Oregon
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