Shop 4,464 Deals on Upper Receivers

CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver MT Carbine 1-10 Twist 5/8x24 TPI Midnight Bronze

ABC RIFLE COMPANY AR-15 Custom Billet Modular Stripped Upper Receiver Flat Dark Earth

ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver Cerakote Flat Dark Earth

ABC RIFLE COMPANY AR-15 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver Flat Dark Earth

ABC RIFLE COMPANY AR9 9mm Luger Pistol 4in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle White

Unique-ARs Slim Lotus Complete Upper Receiver Cerakote Armor Black/Anodize Black

Spikes Tactical Upper 300BLK 16in w/7in BAR2 Rail & FSP

Spikes Tactical Upper 300BLK 16in w/13.2in BAR2 Rail

ABC RIFLE COMPANY AR9 9mm Luger Pistol 4in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Tungsten

ABC RIFLE COMPANY AR9 9mm Luger Rifle Billet 16in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Cerakote Sniper Grey

ABC RIFLE COMPANY AR 9mm Luger 16in Barrel w/12in Quadrail Handguard Upper Receiver w/BCG And Charging Handle 1-8 Twist A2 Style Muzzle Brake Nitride

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 10in Barrel Custom 10in Top Cut Hybrid M-LOK Handguard Complete Upper Receiver w/BCG And

ABC RIFLE COMPANY AR-15 5.56x45mm NATO 16in Barrel 12in Quad Rail Upper Receiver 1-8 Twist 1/2x28 A2 Style Muzzle Brake Nitride Cerakote Olive Drab

Rock River Arms Completed BilletvUpper Receiver .308/7.62X51mm 18 Inch Barrel 1-10 Twist Mid-Length Profile 5/8-24 Threat Free-Float Handguard Brake

American Defense Manufacturing 5.56 10.5 Inch Barrel M-Lok Rail Upper Reciever Olive Drab 10.5 in

Matador Arms MAT916 Upper Reciever Gray 23.5in

Blackout Defense Complete Dual Taper Lock .300 AAC Upper Receiver Group Slick Side 13.9in Pistol Green URGDTL300BLK13.9SLKGRN

Jacob Grey Firearms .300 Blackout 6in Complete Upper Assembly AR-15 Black

Bilson Arms Pump Style Forward Charging Upper Assembly 556FC-UA 16 inch 1-7 Twist Cerakote Anodized/Black

Sharps Rifle Company 18in 25-45 Sharps Complete Upper Assembly HBAR Profile Silver

Jacob Grey Firearms Ultralight Complete Upper Assembly 7.62x39mm 7.5in Black

Jacob Grey Firearms Ultralight Complete Upper Assembly .300 AAC Blackout 10.5in Black

Stag Arms AR-15 Pursuit Right Hand Upper Receiver 6.5mm Grendel 18in Barrel Hanson Profile 1-16 Twist 1/2-28 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 FDE