Brand
Aero PrecisionAero Precision 19
American Defense MFGAmerican Defense MFG 2
Black Rain OrdnanceBlack Rain Ordnance 1
Colt's ManufacturingColt's Manufacturing 2
Daniel DefenseDaniel Defense 1
Foxtrot MikeFoxtrot Mike 2
Geissele AutomaticsGeissele Automatics 4
Primary Weapons SystemsPrimary Weapons Systems 5
Radian WeaponsRadian Weapons 2
SIONICS Weapon SystemsSIONICS Weapon Systems 2
Sons of Liberty Gun WorksSons of Liberty Gun Works 1
Complete Uppers
Sons of Liberty Gun Works M4-89 URG Upper Receiver 9″ – 300BLK
Out of stock
$858.65There is no substitute for quality. Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. Every gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate, and long lasting barrel is the heart of a Combat Grade weapon.
- Barrel: 9″ Combat Barrel
- Caliber: 300 Blackout
- Twist Rate: 1:7
- Handguard: 8″ M89 MLOK
- Thread Pitch: 5/8×24
- Finish: QPQ
Geissele Super Duty Complete Upper Receiver Group – 10.3″
Out of stock
$1,200.00 – $1,350.00The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 10.3” complete upper chambered in 5.56mm features a Nanoweapon coated Surefire Closed-Tine Flash Hider mounted to an 10.3” Manganese Phosphate coated, CHF, Chrome Lined 1-7 twist barrel.
- Length: 10.3″
- Caliber: 5.56MM
- Color: Black or DDC
- Receiver: Super Duty Upper w/ cam Pin cut-out
- Bolt Carrier: Nanoweapon Reliability Enhanced BCG
- Bolt: Geissele Stressproof Bolt with Asymmetric Cam Pin
- Rail: 9.3″ SMR MK16
- Barrel: 10.3″ Geissele Barrel, CHF, Chrome Lined, 1-7 Twist – Geissele Profile
- Gas System: Carbine Length
- Gas Block: Super Compact Gas Block
- Charging Handle: Airborne Charging Handle
- Muzzle Device: Nanocoated Closed-Tine Flash Hider
Geissele Super Duty Complete Upper Receiver Group – 16″
Out of stock
$1,200.00 – $1,350.00The Geissele Super Duty Upper (Complete) features the latest in weapon technology available exclusively from Geissele Automatics. This 16” complete upper chambered in 5.56mm features a Nanoweapon coated Surefire Closed-Tine Flash Hider mounted to an 16” Manganese Phosphate coated, CHF, Chrome Lined 1-7 twist barrel.
- Length: 16″
- Caliber: 5.56MM
- Color: Black or DDC
- Receiver: Super Duty Upper w/ cam Pin cut-out
- Bolt Carrier Group: Nanoweapon Reliability Enhanced BCG
- Bolt: Geissele Stressproof Bolt with Asymmetric Cam Pin
- Rail: 15″ SMR MK16
- Barrel: 16″ Geissele Barrel, CHF, Chrome Lined, 1-7 Twist – Geissele Profile
- Gas System: Geissele Length
- Gas Block: Super Compact Gas Block
- Charging Handle: Airborne Charging Handle
- Muzzle Device: Nanocoated Closed-Tine Flash Hider
American Defense MOD2 14.5″ Complete Upper Receiver – .223 Wylde
Out of stock
$1,250.00American Defense Mfg MOD2 Complete M-LOK Upper Receivers in .223 Wylde come complete with Criterion Barrel, Premium Bolt Carrier Group, Raptor Charging Handle and Surefire Warcomp muzzle device.
- Barrel: Criterion 1/8 Twist
- Barrel length: 14.5″
- Thread Pitch: 1/2×28
- Caliber: .223 Wylde
- Material: 7075 -T6 Aluminum
- Finish: Anodize
- Muzzle Device: Surefire Warcomp
Primary Weapon Systems 11.85″ MK111 PRO Complete Upper – .223 Wylde
Out of stock
$799.95The MK111 PRO features the tried and true PWS long stroke piston system that PWS owners have grown to know and love.
- Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator
- Material: 6061 extrusion
- Finish: Anodized
- Caliber: .223 Wylde
- Barrel Length: 11.85”
- Gas System Length: Carbine
- Barrel Twist Rate: 1:8
- Muzzle Device: A2 Flash Hider
- Upper Receiver: PWS Proprietary Piston Upper
- Handguard: PWS M-Lok™ 11” Handguard (1.7” width, 2.25” height)
- Charging Handle: Radian Raptor™ Ambidextrous Charging Handle
American Defense MOD2 16″ Complete Upper Receiver – .223 Wylde
Out of stock
$1,250.00American Defense Mfg MOD2 Complete M-LOK Upper Receivers in .223 Wylde come complete with Criterion Barrel, Premium Bolt Carrier Group, Raptor Charging Handle and Surefire Warcomp muzzle device.
- Barrel: Criterion 1/8 Twist
- Barrel length: 16″
- Thread Pitch: 1/2×28
- Caliber: .223 Wylde
- Material: 7075 -T6 Aluminum
- Finish: Anodize
- Muzzle Device: Surefire Warcomp
Geissele URGI Complete Upper Receiver Group – 11.5″
Out of stock
$1,249.00The USASOC URGI is a near-clone of the upper receiver group currently in service with the US Army Special Operations Command.
- Geissele SMR MK16, DDC, 10.5″ Rail
- SureFire SF4P 4 Prong Flash Hider
- Mil-Spec M4 Upper Receiver Assembly
- Geissele Airborne Charging Handle
- Geissele Reliability Enhanced Bolt Carrier Group
- Geissele Super Gas Block .750 Low-Profile Gas Block, Pinned
- Super 42 Braided Wire Buffer Spring and Buffer Combo INCLUDED!
- Geissele 5.56MM 11.5″, GOV profile, CHF, Chrome Lined Barrel
Geissele URGI Complete Upper Receiver Group – 14.5″
Out of stock
$1,249.00The USASOC URGI is a near-clone of the upper receiver group currently in service with the US Army Special Operations Command.
- Mil-Spec M4 Upper Receiver Assembly
- Geissele Reliability Enhanced Bolt Carrier Group
- Geissele Airborne Charging Handle, DDC
- Geissele SMR MK16, DDC, 13.5″
- Geissele 5.56MM 14.5″ GOV profile, CHF, Chrome Lined, ML Gas, Barrel
- Geissele Super Gas Block .750 Low-Profile Gas Block, Pinned (Bombproof Installation)
- SureFire SF4P 4 Prong Flash Hider, Pinned & Welded
- Super 42 Braided Wire Buffer Spring and H1 Buffer Combo INCLUDED!
Primary Weapons Systems 16.1″ MK116 Pro Complete Upper – .223 Wylde
Out of stock
$799.95The PWS MK116 PRO is perfect for shooters looking for a cost-effective piston system firearm without sacrificing the high-quality standards PWS has been known for over a decade.
- 33Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator.
- Caliber: .223 Wylde
- Barrel Length: 16.1”
- Gas System Length: Mid-Length
- Barrel Twist Rate: 1:8
- Muzzle Device: A2 Flash Hider
- Upper Receiver: PWS Proprietary Piston Upper.
- Material: 6061 Aluminum.
- Finish: Anodized.
- Handguard: PWS M-Lok™ 15” Handguard (1.7” width, 2.25” height)
- Charging Handle: Radian Raptor™ Ambidextrous Charging Handle
Aero Precision M4E1 16″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard
Out of stock
$433.49This complete upper comes assembled with Aero’s M4E1 Threaded Assembled Upper Receiver and the ATLAS R-ONE Handguard. Includes:
- M4E1 Threaded Assembled Upper Receiver
- ATLAS R-ONE Handguard of choice
- 16″ 5.56 CMV Barrel
- Low Profile Gas Block and Mid-Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
Aero Precision 10.5″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard – No Forward Assist
Out of stock
$365.49This AR15 Complete Upper Receiver, paired with the ATLAS R-ONE handguard streamlines the appearance of your next AR15 build by removing the Forward Assist.
- AR15 Assembled Upper Receiver with No Forward Assist
- 9″ M-LOK ATLAS R-ONE Handguard
- 10.5″ 5.56 CMV Barrel
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
Aero Precision M4E1 12.5″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard
Out of stock
$412.24This complete upper comes assembled with Aero’s M4E1 Threaded Assembled Upper Receiver and the ATLAS R-ONE Handguard. Includes:
- M4E1 Threaded Assembled Upper Receiver
- 12″ M-LOK ATLAS R-ONE Handguard
- 12.5″ 5.56 Government Profile CMV Barrel, Carbine Length
- Low Profile Gas Block and Carbine Length Gas Tube
- AR15 A2 Birdcage Flash Hider
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
Aero Precision M5 18″ .308 Complete Upper Receiver w/ ATLAS R-ONE Handguard
Out of stock
$572.87The .308 Complete Upper Receiver was designed with size and weight in mind featuring Aero’s M5 Assembled Upper Receiver and ATLAS 15″ R-ONE Handguard. Includes:
- M5 Assembled Upper Receiver
- ATLAS 15″ R-ONE Handguard
- 18″ .308 CMV Barrel, Rifle Length
- Low Profile Gas Block and Rifle Length Gas Tube
- Product comes assembled
- This complete upper does not include a BCG or Charging Handle.
Aero Precision M4E1 10.5″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard
Out of stock
$390.99This complete upper comes assembled with Aero’s M4E1 Threaded Assembled Upper Receiver and the ATLAS R-ONE Handguard. Includes:
- M4E1 Threaded Assembled Upper Receiver
- ATLAS S-ONE Handguard of choice
- 10.5″ 5.56 CMV Barrel
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
Aero Precision M4E1 11.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard
Out of stock
$395.24This complete upper includes Aero’s new ATLAS S-ONE Handguard. The S-ONE line of handguards is designed with size and weight in mind, providing the perfect addition to your lightweight build. Includes:
- M4E1 Threaded Assembled Upper Receiver
- 9″ ATLAS S-ONE M-LOK Handguard
- 11.5″ 5.56 CMV Barrel, Carbine Length
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
Aero Precision M4E1 10.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard
Out of stock
$420.58This complete upper includes Aero’s new ATLAS S-ONE Handguard. The S-ONE line of handguards is designed with size and weight in mind, providing the perfect addition to your lightweight build. Includes:
- M4E1 Threaded Upper Receiver, No Forward Assist.
- 9.2″ ATLAS S-ONE Handguard.
- 10.5″ 5.56 CMV Barrel.
- Low Profile Gas Block and Carbine Length Gas Tube.
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
Aero Precision 11.5″ 5.56 Complete Upper Receiver w/ ATLAS R-ONE Handguard – No Forward Assist
Out of stock
$369.74This AR15 Complete Upper Receiver, paired with the ATLAS R-ONE handguard streamlines the appearance of your next AR15 build by removing the Forward Assist. Includes:
- AR15 Assembled Upper Receiver with No Forward Assist
- 9″ M-LOK ATLAS R-ONE Handguard
- 11.5″ 5.56 CMV Barrel, Carbine Length
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel
Aero Precision 16″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard – No Forward Assist
Out of stock
$407.99This AR15 Complete Upper Receiver, paired with the ATLAS S-ONE handguard streamlines the appearance of your next AR15 build by removing the Forward Assist. Includes:
- AR15 Assembled Upper Receiver with No Forward Assist
- 15″ M-LOK ATLAS S-ONE Handguard
- 16″ 5.56 CMV Barrel
- Low Profile Gas Block and Mid-Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle.
Aero Precision 11.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard – No Forward Assist
Out of stock
$369.74This AR15 Complete Upper Receiver, paired with the ATLAS S-ONE handguard streamlines the appearance of your next AR15 build by removing the Forward Assist. Includes:
- AR15 Assembled Upper Receiver with No Forward Assist
- 9″ M-LOK ATLAS S-ONE Handguard
- 11.5″ 5.56 CMV Barrel, Carbine Length
- Low Profile Gas Block and Carbine Length Gas Tube
- Product comes assembled
- This complete upper does not include BCG or Charging Handle
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel
Aero Precision 10.5″ 5.56 Complete Upper Receiver w/ ATLAS S-ONE Handguard – No Forward Assist
Out of stock
$398.54This AR15 Complete Upper Receiver, paired with the ATLAS S-ONE handguard streamlines the appearance of your next AR15 build by removing the Forward Assist. Includes:
- AR15 Assembled Upper Receiver with No Forward Assist.
- 9″ M-LOK ATLAS S-ONE Handguard.
- 10.5″ 5.56 CMV Barrel.
- Low Profile Gas Block and Carbine Length Gas Tube.
- This product comes assembled.
- This complete upper does not include BCG or Charging Handle.
- The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel.
Primary Weapon Systems 7.75″ MK107 Mod 1-M Complete Upper – .223 Wylde
In stock
$1,029.49The MK107 MOD 1-M features the tried and true PWS long stroke piston system that PWS owners have grown to know and love.
- Operating System: PWS Long Stroke Piston System, 3 Setting Adjustable Gas Regulator
- Caliber: .223 Wylde
- Barrel Length: 7.75″
- Gas System Length: Pistol
- Barrel Twist Rate: 1:8
- Muzzle Device: PWS Triad 556
- Upper Receiver: PWS Proprietary Piston Upper
- Upper Receiver Material: T6 7075 Forged.
- Upper Receiver Finish: Anodized
- Handguard: PWS M-LOK™ 7.1” Handguard (1.8” width, 2.1” height)
- Charging Handle: Radian Raptor™ Ambidextrous Charging Handle
Primary Weapon Systems 11.85″ MK111 Mod 1-M Complete Upper – .223 Wylde
Out of stock
$1,029.49The revamped MK111 MOD 1-M line features the tried and true PWS long stroke piston system that PWS owners have grown to know and love.
- System: PWS Long Stroke Piston System, 3 settings Adjustable Gas Regulator
- Caliber: .223 Wylde
- Barrel Length: 11.85”
- Gas System Length: Carbine
- Barrel Twist Rate: 1:8
- Muzzle Device: PWS Triad 556
- Upper Receiver: PWS Proprietary Piston Upper
- Material: T6 7075 Forged, Anodized
- Handguard: PWS M-Lok™ 11.05” Handguard (1.7” width, 2.25” height)
- Charging Handle: Radian Raptor™ Ambidextrous Charging Handle
Colt’s Manufacturing M4 Carbine EPR Upper – 11.5″
Out of stock
$1,049.00Built for the demanding use of those who protect our communities every day, the Colt Enhanced Patrol Rifle Upper (EPR) is the next evolution in the world’s most dependable, thoroughly field-tested patrol upper.
- Barrel: 11.5″
- Caliber: .556 NATO
- Finish: Matte Black
- Sights: MagPul MBUS Pro Front & Rear
- Rate of Twist: 1-in-7″
- Picatinny top rail.
- M-LOK on the 3, 6, and 9 o’clock side of the rail.
- Complete BCG.
- A2 Flash hider.
- Charging Handle.
- Centurion CMR M-Lok Handguard.
- 11.5″ Barrel.