Shop 4,464 Deals on Upper Receivers

ABC RIFLE COMPANY AR-15 7.62x39mm 5in Barrel Custom 5in Top Cut Custom M-LOK Handguard Complete Micro Pistol Upper Receiver w/BCG And Charging Handle

CMMG 5.7X28mm Banshee Upper Group Receiver 8in Midnight Bronze

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Coyote Tan

CMMG DISSENT Mk4 300BLK 16.1in Upper Receiver 1-7 Twist 25.5in 5/8x24 TPI .750in Tungsten

CMMG Dissent Mk4 5.56mm 16.1in Upper Group 1-7 Twist 1/2 X 28 TPI .750in 25.5in Coyote Tan

CMMG Upper Group Dissent Mk47 7.62X39 12.5in 1-10 Twist 5/8 X 24 TPI .750in 22in Tungsten

CMMG Upper Group Dissent Mk47 7.62X39 16.1in 1-10 Twist 5/8 X 24 TPI .750in 26in Sniper Grey

CMMG Upper Group Dissent Mk47 7.62X39 16.1in 1-10 Twist 5/8 X 24 TPI .750in 26in Hard Coat Anodized

Brenton USA Upper Receiver Guide .450 Bushmaster 18in Barrel 11/16x24 Thread 1-24 Twist Midnight MarbleKote Midnight MarbleKote

Brenton USA Upper Receiver Scout .223 Remington 18in Barrel 1/2x28 Thread 1-8 Twist Snow MarbleKote Snow MarbleKote

Brenton USA Upper Receiver Tracker .223 Remington 22in Barrel 1/2x28 Thread 1-8 Twist Snow MarbleKote Snow MarbleKote

Brenton USA Upper Receiver Tracker .223 Remington 22in Barrel 1/2x28 Thread 1-8 Twist Harvest MarbleKote Harvest MarbleKote

Brenton USA Upper Receiver Tracker .224 Valkyrie 22in Barrel 1/2x28 Thread 1-7 Twist Harvest MarbleKote Harvest MarbleKote

Brenton USA Upper Receiver Scout 6.8 SPC 18in Barrel 5/8x24 Thread 1-10 Twist Harvest MarbleKote Harvest MarbleKote

Brenton USA Upper Receiver Scout .350 Legend 18in Barrel 9/16x24 Thread 1-16 Twist Midnight MarbleKote Midnight MarbleKote

Brenton USA Upper Receiver Scout .450 Bushmaster 18in Barrel 11/16x24 Thread 1-24 Twist Snow MarbleKote Snow MarbleKote

Wilson Combat Complete Upper Receiver Recon 6.5mm Grendel 16 inch Barrel Mid Length 1-8 Twist 5/8x24 Thread M-LOK Handguard Q-COMP Armor-Tuff Black

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/12in M-LOK Rail w/ Dynacomp

Troy Upper Receiver Assembly AR-15 A3 223 Wylde 11.5in Barrel Ultra-Low Profile 10.5in SOCC Handguard Black

TRYBE Defense Complete AR Kit 10.5in Barrel 1/2x28 .223 Caliber

TRYBE Defense AR-15 16in Complete Upper M-LOK .300 BLK 4140 CMV

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

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

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