Shop 4,464 Deals on Upper Receivers

EDEMO XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish

Troy SM7ACUK00BT00 M7 Upper Receiver

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 16in Stainless Steel Length Carbine 1-8 Twist w/ 15in MLOK Anodized Black Medium

Moriarti OpticsPlanet Exclusive Pistol Upper Assembly AR-9 9mm 4.5in Straight 1-10 Twist 1/2x36in M-Lok Diamond Cut Slim A2 Slick Slide Black

Moriarti Complete Upper Receiver AR-15 .300 AAC Blackout 16 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard Triport

DEMO Moriarti Upper Receiver Stripped AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard Mini

Moriarti Upper Receiver Stripped AR-15 .300 Blackout 10.5 inch Barrel Medium Profile Pistol Length 1x7 Twist 5/8X24 Thread M-LOK Handguard Mini Shroud

EDEMO OP Exclusive Moriarti AR-15 Upper Receiver Assembly 5.56x45mm 10.5in Carbine Government M-LOK 1-7 1/2x28 Diamond Cut Free-Float Handgrd A2 Flash

Vltor Vis Key Mod Polylithic Upper with Slimline 14in Hand Guard Black

Vltor Vis Fusion Carbine 14in with Keymod And Forward Assist Black

Vltor Mid- Length Upper Receiver with Bolt Assist Shell Deflector Black

Complete AR10 Upper- 22 Creedmoor, 18" Heavy profile, 15" MLOK

KAK Complete AR15 Upper Receiver - 9mm - 5.25" Barrel -4" MLOK

USED LaRue Tactical Stealth 1.0 AR-15 Stripped Upper Receiver M4 Black LT-007-M4

Guntec USA AR-15 Billet Upper Receiver w/Charging Handle and Forward Assist Ejection Door Assembly

EDEMO TRYBE Defense AR-15 Complete Upper Receiver Type II w/ Dust Cover & Forward Assist Mil-Spec 7075 T6 Forged Aluminum Hard Anodized URC EDEMO4

USED ODIN Works Billet Upper Receiver Black UPPER-ODIN-BILLET-1

EDEMO TRYBE Defense Complete Upper Receiver AR-15 16in M-LOK .223 Wylde 5.56x45mm NATO Black w/ Charging Handle and BCG EDEMO3 Used

DEMO Aero Precision M4E1 Complete Upper Receiver AR-15 5.56x45mm NATO 16 in Mid Length Barrel 12 in Quad Rail Handguard No BCG/CH Magpul Cerakote Flat

EDEMO Aero Precision Complete Upper Receiver M4E1-E 10.5in 5.56 Barrel Quantum 9in M-LOK Handguard Anodized Black EDEMO1

DEMO Aero Precision M4E1 Enhanced Upper Receiver 5.56 NATO

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel Front Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black

FM Products MIKE-45 .45 ACP Complete Upper Receiver Kit 5 inch Barrel Mil-Spec Rear Charge Black

FM Products MIKE-45 .45 ACP Build Kit 5 inch Mil-Spec Rear Charge Black