Shop 4,464 Deals on Upper Receivers

Wolfpack Armory Upper Receiver Forged Stripped Black

Bushmaster QPC M4 A3 223 16-inch Upper Assembly

EDEMO ArmaLite AR-10 A4 B-Series Upper Receiver Assembly 7.62x51mm/.308 Winchester Black EDEMO1

BCA AR-15 Ambidextrous Charging Flat Top Upper Receiver

No Brand BC-15 12.7x42 Right Side Charging FDE Cerakote Upper 18" Parkerized Heavy Barrel 1:20 Twist Mid-Length Gas

Andro Corp Industries AR-15 5.56 NATO MLOK G Series Upper 8in No BCG/Charging Handle Black

Spikea (TM)s Tactical Honey Badger Semi-automatic Lower/Upper Set 223 Rem/556NATO Tactical Grey

USED XTS Complete Upper Receiver w/o BCG w/ Ce Rail AR-15 .223/5.56 19.5in 10.5in Barrel Pistol 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride

Vltor Keymod Polylithic Upper Carbine. Shell Deflector Only Black

Aagil Arms Complete AR-15 .223 Wylde Upper Assembly 10.5in Stainless Steel Length Carbine 1-8 Twist w/ 10in MLOK Anodized Black Medium

Outerwild AR15 Billet Upper Receiver Black Anodize

DEMO Radian Weapons Model 1 Complete Upper Receiver .223 Wylde 14.5 in Barrel Custom Mid Length 1-8 Twist 1/2x28 Thread M-LOK Deadair Flash Hider FDE

Moriarti AR-15 5.56/.223 16in Carbine Upper Assembly Black 25.25in

R&D Precision Pw9R Bufferless Upper Kit Complete 9mm Black Large

DEMO CMMG Banshee Upper Receiver Group 9mm 5in Armor Black 99B17FD-AB

FM Products MIKE-9 9mm Build Kit 10 inch Mil-Spec Rear Charge Black

FM Products MIKE-15 .223 Wylde Gen 2 Build Kit 12.5inch Mid Length 4-Position Front Charge 11.75in M-LOK Handguard A2 Flash Hider Black

Midwest Industries Combat Rail HD .223 Wylde 16inch Upper Receiver Group CORE Mid-Length 1-8 Twist 1/2x28 Threads A2 Hardcoat Anodize Black

USED Watchtower Firearms Left Stripped Billet Upper Receiver Black LFT-UDR-BLK EDEMO1 Used Condition Fair

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard Flash Can

EDEMO Radical Firearms Upper Assembly 16 inch 300 AAC HBAR Contour 15 inch FHR w/BCG and CH Black EDEMO1

17-556 KAK Complete AR15 Upper, 18" Barrel, 15" Mlok

Complete AR15 Upper Receiver - 5.56 - 10.5" Barrel - 9.8" MLOK - Pinned 6" FH

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2