Moriarti Upper Receiver with Flash Hider AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard A2. Just drop this pistol upper assembly on your Mil-Spec lower receiver and enjoy the outdoors....
Moriarti Upper Receiver with Flash Hider AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard A2. Just drop this pistol upper assembly on your Mil-Spec lower receiver and enjoy the outdoors....