Complete Uppers

Spikes Tactical

Spike's Tactical Complete Upper Receiver - 223 Rem/556NATO, 14.5" Barrel (16" OAL with Pinned Brake), Mid-length Gas System, Fits AR Rifles, Black, Flat Top Receiver, No Sights, 12" CRR Quad Rail, Dynacomp Muzzle Brake, No Mags

The Spike's Tactical 14.5" 5.56 Mid Length Complete Upper offers the same level of quality and performance available in all their rifles. Spike’s Tactical maintains a high standard of tolerances and attention to detail in the uppers they use for...

Adams Arms

Adams Arms FGAA01357 P1 5.56x45mm NATO 16" Black Nitride Barrel, Aluminum Black Receiver, M4 Handguard for AR-Platform

The Adams Arms P1 model is the perfect platform for shooters who enjoy building and customizing their rifle. The P1 model includes our Picatinny Railed Gas Block with 3 adjustable settings and M4 furniture. The P1 is your Piston Driven foundation, ready...

CMMG Inc.

CMMG Resolute MK4 Upper Receiver 6MM ARC 16.1" Barrel Cerakote Finish Armor Black

Meet CMMG's newest long-range offering. Chambered in Hornady's new 6mm ARC (Advanced Rifle Cartridge), the CMMG's RESOLUTE upper receiver group allows you to pair this exciting caliber with your existing AR15 lower for superior function and accuracy at...

TacFire Inc.

TacFire BU9MM10 Complete 9mm Upper Assembly - 10" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group

Chambered in 9mm, this pistol upper is completely built and ready to be put on a lower. Includes a Bolt Carrier Group.    

TacFire Inc.

TacFire BU9MM7 Complete 9mm Upper Assembly - 7" Black Nitride Barrel, Black Anodized 7075-T6 Aluminum Receiver & M-LOK Handguard for AR-Platform Includes Bolt Carrier Group

Chambered in 9mm, this pistol upper is completely built and ready to be put on a lower. Includes a Bolt Carrier Group.    

Aero Precision

Aero Precision EPC-9 Complete 9MM Upper - Cerakote Flat Dark Earth Finish, 16" Barrel, 1:10 Twist, ATLAS S-ONE 15" Handguard, Does Not Include BCG or Charging Handle

This EPC-9 Complete Upper Receiver comes standard with our ATLAS S-ONE Handguard. The S-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our...

Nordic Components

Nordic Components 22RB Complete Upper - 22LR, 16" Match Grade Barrel

Nordic Components’ 22RB dedicated 22 upper receiver converts your standard AR-pattern lower to a dedicated .22LR for recreational shooting, training, and hunting. The 22RB is manufactured using the same materials as most standard AR15 rifles,...

CMMG Inc.

CMMG Banshee Upper Group - 9MM, 5" Barrel, Armor Black Cerakote Finish

If you’re looking to build the most compact 9mm AR then look no further. CMMG®’s 9mm RDB uppers feature uncompromised design and engineering with styling that is never mistaken for something else. Having more options is always better,...

Q

Q Sugar Weasel Upper Receiver Assembly - 300BLK, 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...

Battle Arms Development

Battle Arms Development WORKHORSE Upper Receiver Assembly - 556NATO, 10.5" Barrel, Carbine-length Gas System, A2 Flash Hider, WORKHORSE 9.5" M-LOK Free Float Handguard

  Specifications: SKU: WH-UR-10.5-556 Barcode: 810033783784 Barrel Length: 10.5in Gas System: Carbine Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56...

Radical Firearms

Radical Firearms 10.5" 300 Blackout Complete Upper Assembly - 10.5" Barrel, 1:8 Twist, 10" RPR MLOK Handguard, A2 Flash Hider

The Radical Firearms 10.5" HBAR profile 300BLK 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 10" RPR free float rail...

Radical Firearms

Radical Firearms 8.5" 300 Blackout Complete Upper Assembly - 8.5" Barrel, 1:8 Twist, 7" RPR MLOK Handguard, A2 Flash Hider

The Radical Firearms 8.5" HBAR profile 300BLK 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 7" RPR free float rail...

Luth-AR

Luth-AR 11.5" Lightweight Barrel Complete Upper Receiver Assembly - 223 Rem/556NATO, Black Finish, 15" Palm Handguard Keymod, 1:9 Twist, Complete Barrel Assembly w/BCG

*CONTACT US FOR A SPECIAL COUPON CODE!* Starts with our 11.5″, 5.56mm Lightweight barrel made from 4150 Chrome Molly with a 1-9″ twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and...

Luth-AR

Luth-AR 16" Lightweight Barrel Complete Upper Receiver Assembly - 223 Rem/556NATO, Black Finish, 15" Palm Handguard Keymod, 1:9 Twist, Complete Barrel Assembly w/BCG

*CONTACT US FOR A SPECIAL COUPON CODE!* Starts with our 16″, 5.56mm Lightweight barrel made from 4140 Chrome Molly with a 1-9″ twist mated to our A3 Flattop receiver which includes our bolt carrier, charging handle, forward assist and...

CMMG Inc.

CMMG Resolute MK4 Upper Receiver - 350 Legend, 16.1" Barrel, Cerakote Finish, Armor Black

350 Legend was introduced in 2019 as a fast moving straight-walled cartridge that gives deer hunters in states with caliber/cartridge restrictions a round that delivers optimal power on target with less recoil than other popular hunting calibers like ...

Alexander Arms

Alexander Arms UTA65 6.5 Grendel Tactical Complete Upper - 6.5 Grendel, 16", Black Cerakote Finsih, 15" M-LOK Handguard

This Upper Features: - 16" Barrel- 5/8 x 24RH Threading- Thread Protector Included- Standard Charging Handle- TCE Alexander Arms® Branded Hand Guard- Black Anodized Finish- One 10 Round Magazine

Alexander Arms

Alexander Arms 6.5 Grendel Incursion 16" Barrel Upper Kit

Introducing the Alexander Arms 6.5 Grendel Upper Kit! This kit has everything you need to get started on your very own 6.5 upper build! The kit includes: Mil-Spec flat top upper receiver (port door and forward assist installed), Our very own high quality...

Knights Armament Company

Knights Armament 32310 Upper Receiver Kit 300 Blackout 9.50" Black Barrel, Aluminum Black Receiver for SR-30 MOD 2

Knight's SR-30 E3 MOD 2 takes advantage of the .300 BLK, offering a 9.5" barrel for a significantly more transportable and maneuverable firearm. The QDC compatible Flash Hider will mount any of the KAC 7.62mm QDC suppressors. The SR-30 has 99% parts...

Knights Armament Company

Knights Armament 31962 Upper Receiver Kit 5.56x45mm NATO 16.10" Black Barrel, Aluminum Black Receiver, URX4 M-LOK Handguard for SR-15 MOD 2

Knight's SR-15 E3 Mod 2 series 5.56mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the...

Knights Armament 31949 Upper Receiver Kit 5.56x45mm NATO 14.50" Black Barrel, Aluminum Black Receiver, URX4 M-LOK Handguard for SR-15 Carbine MOD 2

Knight's SR-15 E3 MOD 2 series 5.56mm NATO barrel is manufactured for military grade durability, and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and increases bolt life far beyond the...

Knights Armament Company

Knights Armament 31963 Upper Receiver Kit 5.56x45mm NATO 11.50" Black Barrel, Aluminum Black Receiver, URX4 M-LOK Handguard for SR-15 CQB MOD 2

Knight's Upper Receiver Kit, SR-15 CQB MOD 2, features a 5.56mm NATO 11.5" chrome lined barrel manufactured for military grade durability and is free-floated inside a URX4 M-LOK handguard. An improved E3 round-lug bolt design both enhances function and...

Radical Firearms

Radical Firearms Complete Upper Assembly - 7.62X39, 16" Barrel, 1:10 Twist, Black, MLOK Handguard, A2 Flash Hider

The Radical Firearms 16" Heavy Barrel contour profile 7.62x39 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...

Radical Firearms

Radical Firearms Complete AR15 Upper Assembly - 300 Blackout, 16" Barrel, 1:8 Twist, Black, MLOK Handguard, A2 Flash Hider

The Radical Firearms 16" HBAR profile 300BLK 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...

Colt's Manufacturing LLC

Colt's Manufacturing Complete 223 Rem/556NATO Upper - 16" Barrel, Black, MLOK Free Float Handguard

Built 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...