Bushmaster

Bushmaster

Bushmaster XM-15 QRC Upper Receiver for 5.56 NATO and .223 Rem with Salt Bath Nitride Finish

Bushmaster

Bushmaster Patrolman Flat Top A4 Upper Receiver 16-inch for 223 Rem / 5.56 NATO

Bushmaster

Bushmaster Bravo Zulu 5.56 NATO 16-inch Upper Receiver with M-LOK Handguard