AR Upper Receivers

Sons of Liberty Gun Works

Sons of Liberty Gun Works M4-89 9" 300 Blackout Complete Upper - 9" Combat Barrel, 1:7" Twist, QPQ Finish, Black, 8" M89 M-LOK Handguard, A2 Flash Hider

*CONTACT US FOR A SPECIAL COUPON CODE!* Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the...

Primary Weapons Systems

Primary Weapons Systems UXR Elite Conversion Kit - .223 Wylde, 16" Barrel, Includes Bolt and Barrel, Black

The UXR Conversion Kit in .223 Wylde with a 16" barrel offers shooters an effortless transition between calibers, thanks to the innovative XChange system. This groundbreaking system simplifies the process by allowing users to swap out the barrel, bolt,...

Radian Weapons

Radian Weapons Model 1 Complete Upper - 300 Blackout, 9" Barrel, 1:5 Twist, SilencerCo ASR Flash Hider, Pistol Length Gas, 8" MLOK Handguard, Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote FDE Finish

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 create a weapon that seamlessly blends form and function. Beyond quality and...

Patriot Ordnance Factory

Patriot Ordnance Factory Renegade Plus Complete Upper 300 Blackout - 10.50" Nitride Barrel, 9" M-LOK Handguard, Adjustable Gas Block Block, Black

Renegade Plus 300Blk Upper: When we decided to make a direct impingement rifle, it couldn’t be another “me-too” carbine. The Renegade Plus Upper embodies everything a direct impingement AR-15 can be. With improvements such as our roller...

Daniel Defense

Daniel Defense DDM4 V7 11.5 Contract Overrun Upper Receiver Group - 11.5" 5.56NATO Barrel, 1:7 Twist, DD4 7.0 Handguard

The Contract Overrun upper receiver group is purpose-built for CQB — maximum maneuverability and reliability in tight spots. The 11.5" Government-profile barrel and Carbine length gas system ensure smooth and reliable cycling while a front sight...

Angstadt Arms

Angstadt Arms AAUMDP0906 MDP-9 Roller Delayed Complete Upper - 9mm, 5.85" Barrel

Complete MDP-9 GEN2 9mm roller delayed upper receiver assembly. Compatible with AR9 and AR15 lower receivers. Includes 1913 Endrail adaptor. COMPACT POWER: ANYTIME READYThe MDP-9 GEN2 roller delayed action is now available as a stand alone upper...

Sons of Liberty Gun Works

Sons of Liberty Gun Works East India Starter Kit - 14.5" Complete Upper Receiver, 556NATO, 14.5" Barrel, Mid Length Gas System

East India Starter Kit The East India Starter Kit is a building block for any build you wish to do. Properly assembled with a USGI barrel nut, this is a great way to finish assembling your own upper without having to know how to install a barrel and gas...

Maxim Defense

Maxim Defense PDX U.R.G Complete Upper - 556NATO, 5.5", Black

**The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers, or a PDX/SCW compatible BCG buffer and Spring.  The Maxim Defense PDX™ U.R.G is built to handle the fierce demands...

Maxim Defense

Maxim Defense PDX U.R.G Complete Upper - 556NATO, 5.5", Flat Dark Earth (Arid)

**The Maxim PDX U.R.G ships with your choice of a Standard Mil-Spec BCG to be used with most common M4 compatible lowers, or a PDX/SCW compatible BCG buffer and Spring.  The Maxim Defense PDX™ U.R.G is built to handle the fierce demands...

Luth-AR

Luth-AR A2 Stripped Upper Receiver - 223 Remington/556NATO, Fits AR-15, Anodized Black

A2 carry handle style, complete with cuts for mounting A2 rear sight (windage and elevation). Features shell deflector, forward assist housing, and provisions for installing an ejection port cover. Precision machined from a premium-grade 7075 T6 aluminum...

American Tactical Inc.

ATI Alpha Max .410 Upper Shotgun GEN3 Kit - .410 Ga, 3", 18.50" Barrel, Includes 5rd Mag, 410 Buffer, and Flip-Up Sights

This ATI Alpha Max .410 Upper Shotgun Conversion Kit is designed to convert your existing 5.56 or .223 caliber AR-15 into a 410 GA semi-automatic shotgun. This conversion provides you with a versatile and powerful weapon for hunting, home defense,...

Spikes Tactical

Spikes SFT50M4 Flat Top Stripped Upper Multi-Caliber 7075-T6 Aluminum Black Anodized Receiver for M4 Platform

Spike's Tactical M4 flat top upper receiver is the same high quality M4 Mil-Spec upper used on their factory builds. This forged upper is constructed of 7075 T6 aluminum with a durable Type III Hardcoat Anodized finish. It includes the forward assist,...

Sons of Liberty Gun Works

Sons Of Liberty Gun Works UPPERSTRIPPED M4 Stripped Upper Receiver Black Anodized Aluminum, Fits Mil-Spec AR-15

The Sons of Liberty Gun Works stripped upper receivers are made to the tightest tolerances while still being compatible with Mil-Spec parts and upper receivers. This ensures that there is absolutely no wobble between receivers which can affect accuracy...

Rock River Arms

Rock River Arms SOC0820V1 LAR-15M CLB Complete Upper - .458 SOCOM 16" Barrel, 13" M-LOK Handguard, Beast Brake

Complete .458 SOCOM AR Upper  

Radical Firearms

Radical Firearms Complete AR15 Upper Assembly - 223 Rem/556NATO, 16" Barrel, 1:7 Twist, Black, MLOK Handguard, A2 Flash Hider

The Radical Firearms 16" Socom profile 5.56mm is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range. Built with our 15" RPR free float rail...

Sharps Bros.

Sharps Bros. SBUR04 Billet Upper Receiver - Fits AR15, Black Finish, Includes Forward Assist and Dust Cover

We often get asked which upper matches the best with our receivers.  Any mil-spec upper will work, that is the beauty of the platform ... but which one fits and matches the best? The answer is this one.   The SBUR04 matches all of our...

Q

Q Sugar Weasel Upper Receiver Assembly - 556NATO, 13" Barrel, 1/2X28, Carbine Length Gas System, Black and Tan, Free Float M-LOK Rail, Adjustable Gas Block, Does Not Include Bolt Carrier Group

You've asked for it and we've made you wait long enough. We're finally offering individual upper receiver assemblies. Designed as a replacement upper for your standard Sugar Weasel or for whatever Frankenstein build you can think of. These uppers come in...

Bravo Company USA / BCM

BCM 4URM4 BCM M4 Upper Assembly Multi-Caliber 7075-T6 Aluminum Black Anodized Receiver for AR-15

Bravo's BCM M4 Upper Receiver Assembly is precision machined to correct Mil-Specs from 7075 T6 forgings extension, providing the user with superior strength when dropped or when mortaring malfunction clearance drills. It has Mil-Std 1913 Rail for...

Sharps Bros.

Sharps Bros., SBUR04, Complete Upper Receiver, Fits AR15, 223 Remington/556NATO, 16"

Complete SBUR04 upper receiver assembly. Full top rail with MLOK slots on 7 sides, making it easy to mount accessories exactly where needed. Includes anti-rotation tabs. Features Upper receiver made from billet 7075-T6 aluminum Handguard is made from...

Radian Weapons R0027 Model 1 Complete Upper 300 Blackout 9"

The Complete Upper is constructed of billet machined 7075-T6 aluminum with proprietary Extended aluminum hand guard w/ Magpul M-LOK mounting system and integrated upper/hand guard stainless steel anti-rotation pin. Its match grade 416R stainless steel...

Radian Weapons

Radian Weapons R0024 Model 1 Complete Upper 223 Wylde 14.50"

The Complete Upper is constructed of billet machined 7075-T6 aluminum with proprietary Extended aluminum hand guard w/ Magpul M-LOK mounting system and integrated upper/hand guard stainless steel anti-rotation pin. Its match grade 416R stainless steel...

ZEV Technologies

ZEV UR556FOR Forged Stripped Upper Receiver - 5.56x45mm, NATO 7075-T6 Aluminum, Black Anodized, Receiver for AR-15

ZEV Technologies Forged AR-15 Upper Receiver comes stripped and ready for your next custom AR build. The upper features a laser T marked Picatinny rail and M4 feed ramps with a standard cut. It is constructed of high-quality 7075 T6 aluminum with...

Aero Precision

AR15 Complete Upper 16" 5.56 Mid-Length Barrel w/ FSB - Magpul SL Mid-Length Handguard, FDE

This AR15 Complete Upper features a 16" 5.56 MId-Length Barrel with Pinned FSB and a FDE Magpul MOE Handguard. Upper: Standard AR15 Upper Receiver Barrel: 16" 5.56 Carbine Barrel with Pinned FSB Handguard: Magpul MOE Handguard Gas System: Mid-Length Gas...

Aero Precision

AR15 Complete Upper 16" 5.56 Mid-Length Barrel w/ FSB - Magpul SL Mid-Length Handguard, Black

This AR15 Complete Upper features a 16" 5.56 MId-Length Barrel with Pinned FSB and Magpul MOE Handguard. Upper: Standard AR15 Upper Receiver Barrel: 16" 5.56 Carbine Barrel with Pinned FSB Handguard: Magpul MOE Handguard Gas System: Mid-Length Gas...