5.56x45mm NATO Upper Receivers

Fightlite Industries Mcr Belt-Fed Upper Ar-15 5.56 Nato 16.25in

LWRC International LWRC IC-SPR 5.56mm NATO 16.1" 1:7" 1/2x28 Bbl Black Complete Upper Receiver ICU5B16SPR

Cobalt Kinetics CK-Pro Urg Complete Upper Flat Dark Earth 5.56 16 Barrel

Cobalt Kinetics CK-Pro Urg Upper Flat Dark Earth 5.56 14.5 Threaded Barrel

Cobalt Kinetics CK-Pro Urg Complete Upper 5.56 7.5 Threaded Barrel

LWRC International LWRC ICDI M-LOK Direct Impingement 5.56mm NATO 16.1" 1:7" 1/2x28 Bbl Black Complete Upper Receiver ICDIU5B16ML

Matrix Arms AR-15 Standard Upper Receiver Stripped

Mike 15 Gen 2 5.56 Upper Receivers - Gen 2 Complete Upper 9'''' Pistol Length Gas W/Blast Diverter

Mike 15 Gen 2 5.56 Upper Receivers - Gen 2 Complete Upper 13.9'''' Intermediate Gas W/A2 Flash Hider

Mike 15 Gen 2 5.56 Upper Receivers - Gen 2 Complete Upper 16'''' Intermediate Gas W/A2 Flash Hider

DPMS M-Lok 5.56x45mm NATO 11.5 inch Upper Receiver One Size

Brigade Manufacturing 5.56 Forged 10.5" 30+1 Tungsten Gray

LWRC IC DI Upper Receiver 223/5.56 10.5" Black

DEL-TON 16'' 1x7 Mid Length Light w/ 15" MLOK Handguard

DEL-TON 16" Heavy Mid-Length Rifle Kit

DEL-TON AR-15 16" Mid-Length Flat Top Barrel Assembly

DEL-TON AR-15 20" Flat Top Barrel Assembly

DEL-TON Complete Upper 223/5.56 16" M4 Flat Top Black

POF-USA AR-15 P415 Edge Complete Upper Receiver 5.56x45mm NATO 10.5" Barrel 9" Edge M-LOK Hanguard Tungsten

FN 15 TAC3 AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

ROCK RIVER ARMS AR-15 A4 Complete Upper Receiver 223 Rem(Wylde)

Rock River Arms AR-15 RRAGE Complete Upper Receiver 5.56x45 NATO 7" Chrome Moly Barrel M-LOK Handguard Black

Rock River Arms AR-15 A4 Complete Upper Receiver 223 Remington (Wylde) 4.5" Chrome Moly Barrel 4.25" M-LOK Handguard Black

Rock River Arms AR-15 A4 Complete Upper Receiver 223 Wylde 20" Stainless Steel Barrel 15" Handguard Black