300 Blackout Ar-15 Rifle length ‘Grab Bag’ upper. Sometimes we receive some cosmetically blemished parts, or a customer might change their mind on an order after building, or we may have leftover gun show inventory. This is an assembled upper (option to add bcg / ch) that will come with a random free float handguard. Could be M-Lok or Picatinny, slim chance of keymod. The receiver itself might be forged or billet, and may or may not have dust cover / forward assist features. The upper/barrel will be functional (shootable), but may just have some cosmetic blemishes, or something small like the dust cover opens if you look at it wrong. Quad rails may fit tight on certain attachments like Magpul. If you aren’t picky and just want a working upper at an advantageous price, this deal might be for you.
The upper will be assembled unless otherwise requested. Pictures are just examples, uppers are random. Function guaranteed but no specific accuracy guarantee. You may mention preferences in the order comments, and we may try to accommodate based on availability, however keep in mind these are random.
Features:
- 300 Blackout Upper
- 5/8 x 32 threads
- Barrel length will be 16″
- Barrel typically 4150 cmv (black), but occasionally 416r Stainless.
- muzzle device (usually a2 flash hider)
- .750 Steel low profile gas block, stainless gas tube
- Upper receiver, m4 feed ramps, anodized black
Key Features:
- Barrel: 16-inch barrel, chambered in .300 BLK
- Handguard: Free float design enhances accuracy and provides ample space for accessory attachment.
- Receiver: Mil-Spec upper receiver ensures compatibility with standard AR-15 lower receivers.
This assembly offers an affordable pathway to complete your AR-15 build without compromising on functionality. Please note that bolt carrier group and charging handle are not included but can be added to customize your setup.

sound of freedom – This was a great set up. I loved being able to customize the set up. Only issue I had was my own fault as a newb to building these. I used a heavy barrel in a slim hand guard. It makes adding attachments tough with clearances. Hoping someday to also get an AR10 from here.