Shop 4,464 Deals on Upper Receivers

Stag Arms AR-10 Long Range Left Hand Upper Receiver 308 Winchester 20in Barrel NJ Compliant HBAR-CMV Profile 1-10 Twist 5/8X24 Thread VG6 Gamma Black

Stag Arms AR-10 Long Range Left Hand Upper Receiver 308 Winchester 20in Barrel HBAR-CMV Profile 1-10 Twist 5/8X24 Thread VG6 Gamma Black

CMMG Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Charcoal Green

CMMG Dissent Mk4 6mm ARC 16.1in Upper Group 1-7.5 Twist 5/8 X 24 TPI .750in 25.5in Midnight Bronze

CMMG UPPER GRP RES MK4 5.56X45 NATO 16.1 GRN D0F66FC0 CMM

LaRue Tactical Upper Reciever Complete .308 Keymod Upper 18 in Barrel Urban Dark Earth Medium DPMS Cut

Spikes Tactical Upper 300BLK 16in w/9in BAR2 Rail

TRYBE Defense Muzzle Brake .30 5/8x24 and TRYBE Defense CIB Cowl Induction Muzzle Brake .30 Caliber 5/8x24

Bilson Arms BA-15CL STD Build Upper Assembly 16 inch 1-7 Twist Cerakote Fde/Graphite Black

Matrix Arms Stripped Upper Receiver 9mm Hardcoat Anodized Finish Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid Pencil Barrel 15in M-LOK ATLAS R-ONE Handguard Anodized

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 16in 5.56 Mid-Length Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized

American Defense Manufacturing .223 Wylde 16 Inch Barrel M-Lok Rail Upper Receiver Flat Dark Earth 16 in

Radical Firearms RF Upper Assembly 10.5in 7.62x39 4150V HBAR Contour 1/10 Twist 9in MHR M-LOK A2 Flash Hider Black

Luth-AR 16 in Light Weight 1-7 kit minus Lower Receiver w/fixed stock M-Lok Black Rifle

Luth-AR Mark 12 Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized

POF USA P415 Edge Upper Receiver Assembly 5.56x45mm NATO 34 in Length 16.5 in Barrel 5 Position Adjustable M-Lok Edge Triple Port Muzzle Break

Next Level Armament NLX450 AR15 450 Bushmaster 18in Forged Complete Upper Receiver 16in Carbine Gas 1-24 Twist Black

Aero Precision M4E1-E Complete Upper 14.5in 5.56 M4 Carbine Barrel EQ-12 Handguard Gen 2 Cerakote Flat Dark Earth

CMMG DISSENT Upper Receiver 9mm 10.5in 1-10 Twist 1/2x28 Thread Zeroed Linear Compensator Tungsten

CMMG DISSENT 5.7x28mm 6.5in Upper Receiver 1-9 Twist 1/2 X 28 TPI Tungsten

CMMG Mk3 6.5 Creedmoor Endeavor Upper Group Receiver 20in Midnight Bronze

CMMG MkG .45 ACP Banshee Upper Group Receiver 8in Charcoal Green

Wilson Combat Upper Complete Forged 5.56 NATO Protector Mid Length 16in Round Q-Comp 1-8 Twist Black Without Forward Assist Black