Upper Receivers

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...

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...

A phenomenal foundation for a battle rifle, this Aero Precision M4E1 Complete Upper features a 14.5" barrel and a 12" Atlas R-One handguard. This complete upper does not include the bolt carrier group (which can be found here) or charging handle (here)...

This AR15 Complete Upper features a 16" 5.56 Mid-Length Barrel w/ Pinned FSB, Mid Handguard Upper Features: Upper: Standard AR15 Upper Receiver Barrel: 16" 5.56 CMV Mid-Length Barrel w/ Pinned FSB Handguard: M4 Style Handguard Gas System: Mid-Length Gas...

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 These products are ***IN STOCK*** (Normally these require up to a 10-month wait) *14.5" Barrel is Pinned & Welded w/ Muzzle Device* The design philosophy behind the Radian Model 1 is simple: use the highest...

ABOUT THE RADIAN UPPER AND HANDGUARD SET   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.   The...

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...