Rock River Arms A4 Flat Top AR-15 Stripped Upper Receiver

Rock River Arms RRAGE 3G 16" Classic Upper 5.56x45mm 1:8 M-LOK Carbine-Length with BCG and CH, Black - High-Performance - BB0470

Rock River Arms NM A4 20" Classic Upper .223 Wylde 1:8 M-LOK Rifle-Length with BCG and CH, Black - Elite Accuracy - AR0784

Ar15 Stripped Upper Receiver - Anderson Ar-15 Stripped Upper, Flattop, M4 Feed Mil-Spec

Rock River Arms Lar15x Varmint A4 20" Stainless Steel Bull Barrel

ROCK AR1231 ELITE CAR A4 16 223 COLL

Rock River Arms LAR-15M All Terrain Hunter Complete Upper .223 Wylde 18 Barrel

LBE Unlimited A2 AR-15 Stripped Upper Receiver