10.5″ .300 Blackout Complete Pistol Upper with 7″ Free-Float Quadrail
This 10.5″ .300 Blackout complete AR pistol upper runs a chrome moly barrel with a nitride finish and 1:8 twist on a pistol-length gas system threaded 5/8″x24, wrapped in a 7″ free-float Picatinny quadrail. The gas block, gas tube, dust cover, and forward assist are all installed on a black mil-spec upper receiver — just add a BCG and charging handle to finish the build. Check out the 7.5″ black M-LOK 5.56 upper, or browse more AR pistol upper build kits.
Specifications:
- Caliber: .300 AAC Blackout
- Barrel: 10.5″, chrome moly, nitride finish, 1:8 twist, 5/8″x24 thread, .750″ gas block, pistol-length gas
- Upper receiver: Mil-spec aluminum, black, dust cover and forward assist
- Handguard: 7″ free-float Picatinny quadrail, black
- SKU: DT12-062
What’s included:
- Upper receiver (black) with dust cover and forward assist installed
- 10.5″ chrome moly nitride .300 Blackout barrel
- 7″ free-float Picatinny quadrail with barrel nut and mounting hardware
- Gas block
- Gas tube
Note: BCG and charging handle are not included and are available as an add-on.










