Ar-15 9 mm 4.5 "upper receiver assembly built by a professional tested to make sure all rounds cycles without any issues, these uppers comes with full warranty, all feed ramps on the barrels are polished for a smooth cycling, it is a Glock format, fits on most 9 mm ar 15 lowers. buy with confidence, guaranteed to hit center mass targets at 100 Yards
Upper receiver Specs:
- Ar15,m4 4.5" upper receiver complete
- Angle Grip
- A3 billet upper receiver
- 9mm Bolt Carrier blow back (Made in Usa)
- Charging Handle (made in usa)
- Caliber: 9x19 para
- Barrel: 4.5" 4150 vanadium Nitrided with polished feed ramp
- Rifling Twist: 1:10 twist
- Muzzle Device: Flash can
- M-15 Uppers use 7075-T6 Aluminum.
- Upper Receiver: Forged Flattop with Picatinny Rail
- Quad rail
Warranty: 1 year warranty against manufacturer defect.
***Ammunition Notification*** GF test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds.