5.56x45mm NATO Upper Receivers

Mitchell Defense DOC 11.5in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Black Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Jungle Green Finish Quad Rail Handguard

Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Flat Dark Earth Finish Quad Rail Handguard

Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Black Finish Quad Rail Handguard

Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver Cold Hammer Forged Chrome-Lined Barrel Black Finish M-LOK Free-Float Handguard

LWRC International LWRC IC-PSD 5.56mm NATO 8.5" 1:7" 1/2x28 Bbl Tungsten Grey Personal Security Detail Complete Upper Receiver ICMKIIU5TG8

LWRC International LWRCI ICMKII PSD 8" Bbl Patriot Brown Upper ICMKIIU5PBC8

LWRC International LWRCI ICMKII PSD 8" Bbl OD Green Upper ICMKIIU5ODG8

LWRC International LWRCI ICMKII PSD 8" Bbl FDE Upper ICMKIIU5CK8

LWRC International LWRC IC-PSD 5.56mm NATO 8.5" 1:7" 1/2x28 Bbl Black Personal Security Detail Complete Upper Receiver ICMKIIU5B8

LWRC International LWRC ICMKII 5.56mm 12" 1/7" 1/2x28 Tungsten Grey Short Barrel Rifle Upper ICMKIIU5TG12S

LWRC International LWRC ICMKII 5.56mm 12" 1/7" 1/2x28 Patriot Brown Short Barrel Rifle Upper ICMKIIU5PBC12S

LWRC International LWRC ICMKII 5.56mm 12" 1/7" 1/2x28 OD Green Short Barrel Rifle Upper ICMKIIU5ODG12S

LWRC International LWRC ICMKII 5.56mm 12" 1/7" 1/2x28 Flat Dark Earth Short Barrel Rifle Upper ICMKIIU5CK12S

LWRC International LWRC ICMKII 5.56mm 12" 1/7" 1/2x28 Black Short Barrel Rifle Upper ICMKIIU5B12S

LWRC International LWRC ICMKII 5.56mm 10" 1/7" 1/2x28 Tungsten Grey Short Barrel Rifle Upper ICMKIIU5TG10S

LWRC International LWRC ICMKII 5.56mm 10" 1/7" 1/2x28 Patriot Brown Short Barrel Rifle Upper ICMKIIU5PBC10S

LWRC International LWRC ICMKII 5.56mm 10" 1/7" 1/2x28 OD Green Short Barrel Rifle Upper ICMKIIU5ODG10S

LWRC International LWRC ICMKII 5.56mm 10" 1/7" 1/2x28 Flat Dark Earth Short Barrel Rifle Upper ICMKIIU5CK10S

LWRC International LWRC ICMKII 5.56mm 10" 1/7" 1/2x28 Black Short Barrel Rifle Upper ICMKIIU5B10S

LWRC International LWRC ICMKII 5.56mm 14" 1/7" 1/2x28 OD Green P/W Short Barrel Rifle Upper ICMKIIU5ODG14S

LWRC International LWRC ICMKII 5.56mm 14" 1/7" 1/2x28 Flat Dark Earth Short Barrel Rifle Upper ICMKIIU5CK14S

LWRC International LWRC ICMKII 5.56mm 14" 1/7" 1/2x28 Black Short Barrel Rifle Upper ICMKIIU5B14S