The perfect pre-built PDW upper. Pick your own handguard and BCG.
This "naked" barreled 7.5" upper provides the perfect base for building a custom PDW pistol or SBR on a budget. Affordable doesn't mean "cheap," though -- this upper features a quality, mil-spec, 4150 CMV barrel with a rugged nitride finish.
Also includes a forged M4 upper, micro low-profile gas block for compatibility with virtually all free-float handguards, and a mil-spec "Birdcage", A2-style flash hider.
NOTE: Does not include handguard, bolt, or charging handle.
What’s Included
This upper is not a firearm. This is only an assembled upper receiver. Lower receiver assembly sold separately.
AR-15 Rifle Kit Specs
Barreled uppers are assembled in-house before shipment.
Barrel
- Chamber: 5.56 NATO
- Contour: M4/Government
- Length: 7.5"
- Twist Rate: 1:7
- Gas System: Pistol
- Gas Block Diameter: 0.750”
- Muzzle Threads: 1/2x28
- Feed Ramps: M4
- Material: 4150 CMV
- Finish: QPQ Nitride
- Process: Button Rifled
- Lining: Nitride
- Extension: M4
- Muzzle: A2 "Birdcage" Flash Hider
Upper Receiver
- Profile: Forged M4 Flattop
- Material: 7075-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
GunBuilders.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
