Shop 4,464 Deals on Upper Receivers

Black Rain Ordnance Spec 15 Complete Upper Black

Brenton USA Upper Receiver Scout 300 HAM'R 18in Barrel 5/8x24 Thread 1-15 Twist Snow MarbleKote Snow MarbleKote

Brenton USA Upper Receiver Scout 300 HAM'R 18in Barrel 5/8x24 Thread 1-15 Twist Harvest MarbleKote Harvest MarbleKote

XTS Complete Upper Receiver w/o BCG w/ 12in Rail AR-15 300 BO 24.75in 16in Barrel Carbine 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish

CMMG MK3 308 Win Stripped Upper Receiver Billet Aluminum Black 38BA157

Guntec USA AR-15 9mm Dedicated Stripped Billet Upper Receiver Purple

Guntec USA AR-15 Stripped Billet Upper Receiver Anodized Rose

Dark Storm Industries DS-15 5.56 Nato 16in Non-Threaded Complete Upper Receiver ODG

PSA AK-104 GF4 Barrel Assembly - Furniture Ready

Sons of Liberty Gun Works East India Starter Kit Combat Grade FSB 20in w/ Front Sight Base Black

USED Stern Defense SD 4in Mod4 M-Lok 4in Barrel 9mm Black Complete Upper Receiver Black SDINBRLKK

USED New Frontier Armory New Frontier C4 Upper Receiver Ar15 Stripped Billet Black EDEMO2 Used Condition Fair

Bear Creek Arsenal BC-15 6.5 Grendel 22in Bolt Action Style Upper Receiver Heavy Barrel 1-8 Twist 5/8x24 Flash Hider Parkerized

CBC Industries Unassembled AR-15 Pistol Kit 7.5 in 300AAC Black

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Vital Upper Receiver 5.56x45 NATO 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 7 inch M-LOK Free Float Hand Guard A2 Birdcage Flash

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 7.5 inch Pistol Length 4150 M4 Barrel 1-7 Twist 7 inch M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Flash

USED Ghost Firearms Elite Complete Barreled Upper Receiver Blue Titanium GF55FC7GFR9BT

Ghost Firearms Upper Receiver Rifle Lower Parts Kit 9mm 9x19 Para 16in Carbine 4150 Light HBAR Barrel 1-10 Twist 14in M-LOK Free Float Hand Guard A2

Ghost Firearms Elite Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm/.223 10.5in Carbine Moly Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

ZEV Technologies MEGA MATEN MML Billet Stripped Upper Receiver w/14'' M-LOK Handguard Black