Shop 4,476 Deals on Upper Receivers

Rock River Arms CLB 16" Classic Upper .458 SOCOM 1:14 M-LOK Carbine-Length with BCG and CH, Black - Heavy Duty Performance - SOC0820.V1

Tacfire .223 Rem/5.56 Stripped Upper Receiver for Billet AR-15 Style Rifle, Hardcoat Anodized Black - UP01

CMMG Resolute 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Titanium - 28B260CTI

CMMG Endeavor 20" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Coyote Tan - 28B3D0CCT

CMMG Dissent 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with Charging Handle - Sniper Gray - 28B940CSG

CMMG Resolute 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Charcoal Green - 28B260CCG

CMMG Resolute 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Sniper Gray - 28B260CSG

CMMG Resolute 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Coyote Tan - 28B260CCT

CMMG Dissent 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with Charging Handle - Tungsten - 28B940CTNG

Chiappa Firearms M4-22 Gen-II Pro .22lr 18.5" Barrel Carbine Conversion Upper Receiver Kit - 500.093

GUNTEC USA AR-15 Upper Receiver Stripped 9mm

Guntec USA AR-15 Stripped Billet Upper Receiver MIL-A-8625 Type III Anodized Black

Anderson Manufacturing AM-15 Upper Receiver Assembled w/Charging Handle, Black

Bushmaster Bravo Zulu Upper .450 BM 20 Barrel

Daniel Defense DD5 V4 6.5 Creedmoor 18" Bbl M-LOK Complete Upper Receiver Group 23-158-04211

Tacfire Build Kit w/ 18" Anodized Black Barrel for AR-10 308 Winchester Rifle - SSRK308LPK18BN

Tacfire Build Kit w/ 16" Nitride Black Barrel for AR 9mm Luger ADC Rifle - SSRK9MM16LPK

Del-Ton Pre-Ban 20" Classic Upper 5.56x45mm 1:9 Standard-Length, Black

Q LLC Sugar Weasel .223 Remington Upper with 13" Barrel, Black, Tan - ACCSW55613INUPPER

Patriot Ordnance Factory P415 Edge 10.5" Upper 5.56x45mm 1:8 M-LOK Rail w/ BCG and CH, ODG - 01988

Radian Weapons Model 1 16" MOE Upper .223 Wylde 1:8 M-LOK Rail Mid-Length with BCG and CH, Radian Brown - R0472

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Gray - Elite Carbine - R0618

Radian Weapons Model 1 Upper Flat Dark Earth 5.56

CMMG Dissent 10.50" Upper .300 AAC Blackout with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Armor Black - 30BC239AB