Shop 4,464 Deals on Upper Receivers

USED R&D Precision Billet Upper Receiver AR 15. 9mm Black Small EDEMO1 Used Condition Fair

Guntec USA AR-15 Complete 5.56 Upper Receiver w/o Lower Parts Kit N.6 15in Air-Lok M-Lok Handguard MLS Gen 2 Stock Assembly Carbine Length .750 Gas

EDEMO Ammunition Storage Components AR-15 Billet Slick Side Upper Receiver Stripped Hardcoat Anodize Black AR-15-BSSU EDEMO2

17-556 KAK Complete AR15 Upper, 18" Barrel, 13" Mlok

KAK Complete AR15 Upper Receiver - 300 Blackout - 10.5" Barrel - 9.8" MLOK

Complete AR15 Upper Receiver - 7.62x39 - 4.75" Barrel, 4" MLOK

Complete Upper Receiver - 5.56 - 12.5" Barrel Mid Gas- 9.8" MLOK - Pinned and Welded

Complete AR15 Upper Receiver - 5.56 - 12.5" Barrel Carbine Gas - 13" MLOK - 4" Pinned Flash Hider

Complete AR15 Upper Receiver - 5.56 - 16" Barrel Mid Gas - 15" MLOK

DEMO Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 16 Inch Barrel 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

DEMO Aero Precision OPMOD AR-15 Compete Upper Mid Length 5.56x45 1/2x28 Threads Black

ZEV Technologies MEGA MATEN MML Billet Stripped Upper Receiver w/12'' M-LOK Handguard Black

Bilson Arms 9mm Pump Style Forward Charging Upper Assembly with 416R-Stainless Steel Barrel Cerakote/Anodized 1

Jacob Grey Firearms Complete Upper Assembly 9mm 7.5in 1-10 Twist 1/2x36 Thread Black

Jacob Grey Firearms JG-15 Stripped Upper Receiver Billet Aluminum Raw Unfinished

Grey Ghost Precision Complete Upper 5.56mm 20.12in 10.5in Low Profile Carbine 1-7 1x2/28 M-LOK Black

Guntec USA AR-15 Complete 9mm Upper Receiver Mil-Spec Charging Handle 4 inch M-Lok Handguard 5.5 inch Contour 4150 Barrel 1-10 Twist 1/2x36 Mini Socom

NBS Enhanced AR-15 Stripped Billet Upper Receiver

Evolve Weapons Systems Assembled Upper Receiver 16in Mid Length Gas System Quad Rail Black

Evolve Weapons Systems Complete Upper Receiver 14.5in Mid Length Gas System Quad Rail Black

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group Slick Side 11.5in Carbine Grey

POF USA Rogue Upper Receiver Assembly Mid Length 11in Handguard 12.5in Barrel 5/8x24 M-LOK Micro B Muzzle Break Black

NEMO Arms Builder Series AR-15 Small Frame Forged Upper Receiver Type 3 Hard Coat Black Anodized

CMMG DISSENT Upper Receiver 9mm 6.5in 1-10 Twist 1/2x28 Thread Zeroed Linear Compensator Charcoal Green