Assembled Upper Receiver

New Arrivals

Best Sellers

TacFire

TacFire BU-556-10, Receiver, Pistol Upper Assembly 5.56x45mm NATO 10" Black Nitride Barrel M-LOK Handguard Includes Bolt Carrier Group, Black Anodized

The TacFire BU-556-10 Pistol Upper Assembly brings a compact 5.56x45mm NATO setup to your AR-platform, pairing a 10" black nitride barrel with a black anodized 7075-T6 aluminum receiver and M-LOK...

MSRP:

Was:

Now: $342.89
Quick Add

Luxus Arms

HM Defense MonoBloc Upper, Receiver, 16" 4150 Chromoly Barrel, 15" M-LOK Free-Float Handguard, Black Cerakote/Black Anodized Finish

The HM Defense 16MBUP556 MonoBloc Upper 223 Rem, 5.56x45mm NATO pairs a patented Monobloc barrel with a sleek 15" M-LOK free-float handguard to deliver a refined, accurate AR-15 upper assembly. Its...

MSRP:

Was:

Now: $650.00

Quick Add
Colt

Colt M4 LE6933 EPR, Receiver, 11.50" Carbine Barrel, Stripped, Black Matte

The Colt M4 LE6933 EPR Upper Group 11.5in Stripped is a compact AR-15 upper built around Colt’s Enhanced Patrol Rifle concept, pairing a chrome-lined 11.5 inch barrel with a Centurion Arms free float...

MSRP:

Was:

Now: $729.99
Colt

Colt LE6921CK-NHG, Receiver, M4 Upper Assembly w/ BCG & Charging Handle, Black

The Colt LE6921 Upper Receiver 14.5" Barrel With BCG & Charging Handle gives builders a proven M4-pattern foundation straight from Colt. This complete upper arrives without handguards, letting you...

MSRP:

Was:

Now: $749.99
Alexander Arms

Alexander Arms KIT50, Receiver, Upper Parts Kit 50 Beowulf 16" Barrel, Aluminum, Black Finish

The Alexander Arms KIT50 Upper Parts Kits 50 Beowulf 16" Black Barrel, Aluminum Black Receiver for AR-15 is a semi-complete upper kit built around a 16" threaded barrel and aluminum flat-top receiver...

MSRP:

Was:

Now: $751.35
Colt

Colt LE6945CK, Receiver, Complete Monolithic Upper Group with BCG and Sights, Matte Black

The Colt M4 LE6945 Upper Group 10.3in With BCG And Sights is a complete monolithic upper receiver assembly designed to drop onto your AR-15 lower and deliver Colt’s proven M4 performance. Built...

MSRP:

Was:

Now: $1,349.99
Spike's Tactical

Spikes Tactical STU5435R2S, Receiver, Complete Upper 5.56x45mm NATO 16" Midlength Barrel, 12" SAR3 Free-Floating Handguard, Black Phosphate

The Spikes STU5435R2S Complete Upper 5.56x45mm NATO 16" Black Phosphate/Midlength Barrel, 7075-T6 Aluminum Black Receiver, 12" SAR3 Free-Floating Handguard for AR-15 is built as a mil-spec compliant...

MSRP:

Was:

Now: $788.40
Colt

Colt M16 Upper Group 20in M16 Handguard Stripped, Receiver, Stripped, Matte Black

The Colt M16 Upper Group 20in M16 Handguard Stripped brings the classic 20-inch M16 configuration to your AR-15 build, using the same government-profile, chrome-lined barrel found on Colt’s M16A2 and...

MSRP:

Was:

Now: $574.99
Colt

Colt M4 LE6943, Receiver, Complete Monolithic Upper w/ BCG and Sights, Black Matte

The Colt M4 LE6943 Upper Group 11.5in With BCG And Sights is a complete monolithic AR-15 upper designed for shooters who want factory-engineered reliability in a compact package. Built around Colt’s...

MSRP:

Was:

Now: $1,215.38
Colt

Colt M4 LE6920 Upper Group, Receiver, 16.10" Barrel, Stripped, Matte Black

The Colt M4 LE6920 Upper Group 16in Stripped brings the proven M4 carbine configuration to your AR-15 build, using Colt’s factory upper receiver and 16" chrome-lined, button-rifled barrel with a 1:7...

MSRP:

Was:

Now: $495.99
Luth-AR

Luth-AR BA-F11-7, Receiver, 11.5" Lightweight Gov't Profile Upper, Black

The Luth-Ar AR-15 11.5" Lightweight Gov't Profile Upper Receiver 1-7 is a complete A3-style upper assembly built around a government-profile 11.5-inch barrel. Chambered for 5.56x45 NATO, it combines...

MSRP:

Was:

Now: $408.95
Colt

Colt M16 Upper Group 20in MOE Stripped, Receiver, Complete Upper, Matte Black

The Colt M16 Upper Group 20in MOE Stripped brings the classic 20 inch M16 configuration to your AR-15 build in a modern, modular package. Built around a government-profile, chrome-lined 5.56x45 NATO...

MSRP:

Was:

Now: $499.99