Shop 4,481 Deals on Upper Receivers

Tiger Rock AR-15/47/9/300 Stripped Upper Receiver Cerakote Organge Medium

CMMG Mk4 .22LR Banshee Upper Group Receiver 4.5in 1-16 Twist 1/2 X 28 TPI 12.8in Coyote Tan

Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail

Geissele 5.56 Super Duty MOD 1 Upper Reciever .750 16 in Black

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Cold Hammer Forged Carbine 1-8 1/2x28 Flash Hider Black Nitride

Bear Creek Arsenal BC-15 .223 Wylde 10.5in Bolt Action Style Upper Receiver M4 1-7 1/2x28 Flash Hider 416R

Bear Creek Arsenal BC-15 .223 Wylde 16in Bolt Action Style Upper Receiver Heavy 1-8 1/2x28 Flash Hider 416R

Bear Creek Arsenal BC-15 5.56 NATO 16in Bolt Action Style Upper Receiver M4 Barrel 1-8 Twist 1/2x28 Flash Hider 416R

Bear Creek Arsenal BC-15 5.56 NATO 16in Bolt Action Style Upper Receiver M4 Barrel 1-8 Twist 1/2x28 Flash Hider Parkerized

Aero Precision M4E1-T Complete Upper Receiver .300 AAC Blackout 10in Pistol Length S-One M-LOK Handguard Black

CMMG Dissent Mk4 6.5mm Grendel 16.1in Upper Group 1-8 Twist .750in 25.5in 5/8 X 24 TPI Tungsten

CMMG DISSENT Mk4 5.56x45mm NATO 6.5in Upper Receiver 1-7 Twist .750in 1/2 X 28 TPI Titanium

CMMG Mk4 6.5 Grendel Resolute Upper Group Receiver 16.1in Midnight Bronze

POF USA Minuteman Upper Receiver 5.56 16.5in Barrel Mid Length 1-8 Twist 1/2x28 14.5in Renegade Rail 3-prong Flash Hider Tungsten

POF USA Revolution PD Complete Upper Cerakote Burnt Bronze 6.5 Creedmoor 20"

Tiger Rock AR-15/47/9/300 Stripped Upper Receiver Cerakote Red Medium

Aero Precision M5E1 Complete Upper 18in .308 SS Rifle Barrel EM-15 Handguard Anodized W/BCG/CH Black

ABC RIFLE COMPANY AR-15 Billet Stripped Upper Receiver Cerakote Tungsten

ABC RIFLE COMPANY AR-15 .300 AAC Blackout Pistol M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Sniper Grey

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver 9mm 9x19 Para 7.5 inch 4150 Light HBAR Barrel 1-10 Twist 7 inch Octagon M-LOK Rail A2 Flash Hider Black

Grid Defense Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Rail A2 Flash Hider Blue Titanium

Grid Defense Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Rail A2 Flash Hider Burnt Bronze

Aero Precision M5 Complete Upper Receiver 16in .308 Mid Barrel w/ATLAS R-ONE 12in M-LOK Handguard Anodized Flat Dark Earth