Solo 300 Upper (300 Blk)

The Solo 300 is something new in the AR-15 world; a manually operated, straight-pull upper that requires no buffer tube. The result is the lightest, most compact weapon possible on the AR-15 platform. The Solo 300 is compatible with any AR-15 lower, with or without buffer tube. And because it's based on an AR-15 upper receiver, it's compatible with all your favorite accessories, including free-float handguards and magazines of all sizes. Whether you configure it as an SBR, braced pistol, or a true handgun, the Solo 300 upper gives you the lightest, most compact 300 Blackout on the market. 300 Blackout 416 Stainless barrel  5/8-24 threaded muzzle  1-5" Twist (6" Barrel) 1-7" Twist (9" & 16" Barrels) 5R Rifling  Fluted stainless thread protector 7075-T6 Aluminum  Mil-spec Ejection Port Cover  Compatible with buffer tubes, buffer hole plugs, and picatinny stock/brace adaptors (all available separately.) Optional Black Cerakote on barrel & bolt handle  Optional free-float Mlok han