BCG Complete New Frontier Armory
M4 AR-15 platform auto/semi-auto
Carrier, gas key, cam pin, ejector: 8620 or 4130/40
Extractor: Tool steel & MIM’d
Bolt: 9310 or 4130/4140
Firing Pin: 400 series stainless
Carrier, gas key, cam pin, ejector: 8620 or 4130/40
Extractor: Tool steel & MIM’d
Bolt: 9310 or 4130/4140
Firing Pin: 400 series stainless
Rock River Arms Lower Parts Kit RRA LPK
Single stage In Stock Free Shipping
Rock River Arms National Match RRA LPK NM IN STOCK
National Match 2 stage Free Shipping
STAG ARMS LPK Lower Parts Kit
Single stage stag arms Lower parts kit