Filter
Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 20" Barrel, A2 Carry Handle

Rifles

Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 20″ Barrel, A2 Carry Handle

Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 16" Barrel, Picatinny Rail

Rifles

Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 16″ Barrel, Picatinny Rail

Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 16" Barrel, A2 Carry Handle

Rifles

Simunition 9MM M4/M16/AR15 Complete Upper Receiver, 16″ Barrel, A2 Carry Handle