Upper Assemblies
The Upper Assemblies category includes a wide range of complete upper receiver assemblies for AR-15 style rifles. These assemblies come with everything you need to upgrade or customize your firearm, including barrels, handguards, and receivers. Brands like Colt, KAC, Daniel Defense, and Primary Weapons Systems offer high-quality options with various barrel lengths and finishes to suit your needs. Whether you're looking for a compact CQB setup or a versatile all-purpose upper receiver, you'll find top-notch options in this category to help you enhance the performance and appearance of your rifle.
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Out Of Stock
Colt LE6943CK Monolithic Complete Upper Receivers 11.5" Bbl
Colt
$999.98The Colt LE6943CK Monolithic Upper Assembly feature's Colt's law enforcement fully unitized URG. In addition to an uninterrupted full-length front rail, this upper receiver allows for a free-floated barrel. This LE6943CK Monolithic Upper Assembly...$999.98 -
On Sale
Colt LE6920CK 16.1" Complete Upper Receiver
Colt
Now: $599.98Was: $879.98The Colt LE6920CK Upper Receiver Assembly feature's Colt's upper receiver. This upper receiver allows for a free-floated barrel and also features a gas-block mounted fixed front sight post with bayonet lug. The barrel is Colt's standard 16.1" chrome...Now: $599.98Was: $879.98 -
Out Of Stock
Colt LE6945CK Complete Upper Receiver Kits 10.5" Bbl w/Integrated Rail
Colt
$1,099.98The Colt LE6943CK Monolithic Upper Assembly feature's Colt's new monolithic upper receiver. In addition to an uninterrupted full-length front rail, this upper receiver allows for a free-floated barrel. This LE6943CK Monolithic Upper Assembly also...$1,099.98 -
Out Of StockOn Sale
Caracal CAR816 A2 Short Stroke Piston 11.5" Complete Upper 5.56x45mm
CARACAL
Now: $999.98Was: $1,254.00CAR816 A2 11.5″ COMPLETE UPPER • 5.56x45mm NATO Gas Operated Short Stroke Piston with 3 Position Adjustable gas key • Built to exceed NATO test protocols; Bore Obstruction and “Over the Beach” Testing.• Forged...Now: $999.98Was: $1,254.00 -
On Sale
Colt LE6920EPR-CK Complete Upper Receiver 16" Bbl.
Colt
Now: $889.98Was: $1,049.00Built for the demanding use of those who protect our communities every day, the Colt Enhanced Patrol Rifle (EPR) is the next evolution in the world's most dependable, thoroughly field-tested patrol rifle. Featuring an extended handguard that accepts...Now: $889.98Was: $1,049.00 -
Out Of Stock
CMMG 5.7X28MM Resolute 300 Upper , 16" Barrel, W/ 3 40Rd Magazines
CMMG
$899.95Product Description CMMG IS A LEADING MANUFACTURER OF AR-15 RIFLES, 22LR AR-15 CONVERSION KITS AND ACCESSORIES. Specifications UPC 816422029907 Manufacturer CMMG Manufacturer Part...$899.95 -
Out Of StockOn Sale
Colt 6933-EPR 5.56mm Commando Enhanced Patrol Rifle Complete Upper Receiver Assembly w/ 11.5" Barrel
Colt
Now: $895.00Was: $999.98The Colt LE6933-EPRCK Upper Assembly is used on the LE6933-EPR and R0933-EPR Commando Enhanced Patrol Rifles. This upper receiver allows for a free-floated barrel and also features a full-length Centurion MLOK Handguard. The barrel is Colt's standard 11...Now: $895.00Was: $999.98 -
On Sale
Colt LE6933CK Complete Upper Receiver 11.5" Bbl.
Colt
Now: $749.98Was: $899.00Colt's Manufacturing, Complete Upper, 223 Rem/556NATO, 11.5" Lightweight Barrel, Black Finish, A2 Fixed Front Sight, Magpul BUIS Rear Sight High quality components and precise manufacturing makes Colt Products ideal for both new shooters and...Now: $749.98Was: $899.00 -
KZ Barrel Spline Socket STEEL Rod AR15/M4 7.62mm Steel Upper Receivers
Kley-Zion
$69.98A great tool that securely holds an upper receiver assembly for maintenance and assembly work. The removal and installation of barrels, flash hiders, gas blocks and hand guards is made much easier and simpler. Designed to be gripped in a bench vise so...$69.98 -
Out Of Stock
PWS Complete Upper Recivers
Primary Weapons
$799.55 - $999.55Type a description for this product here...$799.55 - $999.55 -
Out Of StockOn Sale
Caracal CAR816 A2 Short Stroke Piston 16" Complete Upper 5.56x45mm
CARACAL
Now: $999.98Was: $1,254.00CAR816 A2 16″ COMPLETE UPPER • 5.56x45mm NATO Gas Operated Short Stroke Piston with 3 Position Adjustable gas key • Built to exceed NATO test protocols; Bore Obstruction and “Over the Beach” Testing.• Forged...Now: $999.98Was: $1,254.00 -
Out Of StockOn Sale
Daniel Defense, Complete Upper Receiver, MK18 URG, 556NATO, 10.3" Hammer Forged Barrel, 1:7 Twist, Flat Top Receiver, Flat Dark Earth Finish
Daniel Defense
Now: $1,199.98Was: $1,412.00Use what THEY use. The Daniel Defense MK18 Upper Receiver Group features the railed forend Daniel Defense currently provides to USSOCOM and a 10.3" Cold Hammer Forged Barrel. The MK18 Rail Interface System (RIS II) features the Bolt-Up System has been...Now: $1,199.98Was: $1,412.00