Upper Receivers

We're big fans of the M4 platform and that includes the close ancestors to the M4 like the CAR-15/723 and its shorter barrel brother 733, another variant that makes frequent cameos in popular culture. This upper features a Colt 11.5" M4 Chrome-Lined 5.56...

We're big fans of the M4 platform and that includes the close ancestors to the M4 like the CAR-15/723, one of our favorite variants that makes frequent cameos in popular culture. This upper features an LMT 14.5" M4 Chrome-Lined 5.56 Carbine-Length Barrel...

The Geissele Super Duty Upper (Stripped) features the quality and worksmanship you've come to expect from the Geissele name.   At the heart of this stripped upper is a Super Duty upper receiver that mates to a MK16 Super Modular rail via a center...

We're big fans of the M4 platform and that includes the close ancestors to the M4 like the 727 and XM4. This upper features a 14.5" Chrome-Lined 5.56 Carbine-Length Barrel w/ Pinned FSB and Carbine Handguards. Choose COLT SOCOM or LMT M4 barrel. Upper...

This AR15 Upper features a 14.5" 5.56 Carbine-Length Barrel w/ Pinned FSB, Carbine Handguard  Upper Features: No Cage Code as of 2024 Upper: Standard AR15 Upper Receiver Barrel: 14.5" 5.56 CMV Carbine-Length Barrel w/ Pinned FSB,  Handguard: M4...

ABOUT THE RADIAN MODEL 1 COMPLETE UPPER, 10.5" .223 Wylde  ***IN STOCK*** The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to...

The MUR is a rigid Mil-Spec flat-top upper made to fit all AR15/M16 M4 rifles and carbines. The MUR was developed to give the customer a Mil-Spec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more...

AR15 Assembled Upper Receiver. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps. Threaded Forward Assist Roll Pin - Allows for simple installation of the forward assist...

ABOUT THE RADIAN MODEL 1 COMPLETE UPPER Sign up for in-stock notifications if out of stock. Normally these products are built to order and require a long lead-time before shipment, but we hope to have a limited amount available soon. If you can...

ABOUT THE RADIAN MODEL 1 COMPLETE UPPER If you can Add-to-Cart, these products are ***IN STOCK*** (Normally these require up to a 10-month wait). If they're out of stock, let us know you want one! The design philosophy behind the Radian Model 1 is...

  BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings) Built to the correct Mil-Specs (Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate rifle. Please use a heat gun or hair dryer to...

***Back in Stock!*** ABOUT THE RADIAN UPPER AND HANDGUARD SET   These are actually in stock! Normally these products are built to order and require a long lead-time before shipment, but we have a limited amount available now.   The Radian Model...