Shop 4,476 Deals on Upper Receivers

TacFire 5" Upper 7.62x39mm 1:10 Free Float M-LOK Picatinny Rail, Black

TacFire 5" Upper .300 AAC Blackout 1:7 M-LOK Rail, Black

Sons of Liberty Gun Works M4-L89 14.50" Upper 5.56x45mm, Black

Larue Stripped Upper Receiver, Black

CMMG Upper Receiver Assembly, Armor Black

CMMG Banshee 8" Upper 5.7x28mm 1:9 M-LOK Carbine-Length, Black

Aero Precision Complete Upper Receiver w/ ATLAS S-ONE Handguard M5 22in Barrel 6.5mm Creedmoor Rifle Length SM15 Anodized Black

Aero Precision AR-15 M4E1-E Upper Assembly 5.56x45mm NATO 13.9" Barrel 12.7" ATLAS R-ONE Handguard Black

Aero Precision LR-308 M5 Complete Upper Assembly 6.5 Creedmoor 22" Stainless Steel Fluted Barrel 15" ATLAS S-ONE Handguard Flat Dark Earth

CMMG Resolute 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Tungsten - 28B260CTNG

CMMG Endeavor 20" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Tungsten - 28B3D0CTNG

CMMG Dissent 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with Charging Handle - Coyote Tan - 28B940CCT

CMMG Dissent 16.10" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with Charging Handle - Armor Black - 28B940CAB

CMMG Endeavor 20" Upper .22 ARC with 1:7 Twist Rate and M-LOK Rail - Rifle-Length with BCG and CH - Charcoal Green - 28B3D0CCG

CMMG Dissent 10.50" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Sniper Gray - 55B8D86SG

Spikes Tactical 16" Upper 5.56x45mm 1:7 Quad Rail Mid-Length with BCG, Black - Enhanced Carbine Upper - STU5035CQ2F

Black Rain Ordnance Bro-Carnivore 16" Upper Receiver .450 Bushmaster - Armor Black with M-LOK Rail - 450B

Guntec USA AR-15 Stripped Billet Upper Receiver Flat Dark Earth

Bushmaster Bravo Zulu Upper .450 BM 16 Barrel

Alexander Arms Hunter Complete Upper 6.5 Grendel 18 Barrel 10-Rounds

Radian Weapons Model 1 Complete Upper Brown .223 Wylde 17.5 Barrel

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Black - Elite Tactical - R0192

Aero Precision M5E1 Enhanced Upper Receiver .308 Win 18

Primary Weapons Systems MK107 Mod 2-M Upper Receiver 7.62X39 7.75 Barrel CQB 30 Muzzle Device Anodized Finish Black MLOK Handguard Long Stroke Piston