How to Build an AR-15 Upper Receiver
GUIDE TO PUTTING TOGETHER YOUR AR-15 UPPER BUILD KITS Parts List for a Standard AR-15 Upper Assembly Upper Receiver Ejection Port Door Assembly Forward Assist Assembly Barrel Barrel Nut Gas Tube Gas Block Muzzle Device Muzzle Device Crush Washer Handguard Bolt Carrier Group Charging Handle If you don’t have the time to track […]
