Lead & Steel Llc ARC14URGODG All-Rounder Carbine Upper Receiver 5.56

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

Colt EPR 5.56 M-LOK 16" AR-15 Upper, Black - LE6920EPR-CK

Colt EPR 11.5" 5.56 AR-15 Upper, Black - LE6933EPR-CK

Lead & Steel All Rounder Carbine 14.5in Mid Length Monobloc Upper Receiver Group Earth

Lead & Steel All Rounder 5.56mm 13.9in Upper Reciever Group Mid-Length 1-8 Twist A1/ A2 Flash Hider Earth

Lead & Steel All Rounder Carbine 14.5in Mid Length Monobloc Upper Receiver Group Olive

Lead & Steel Just As Good 18" Upper 5.56x45mm 1:7 Free Float M-LOK Mid-Length, OD Green