7.5" Free Floated 300 Blackout Complete AR15 Upper Receiver - FREE SHIPPING
This complete AR15 pistol upper receiver comes with everything you need already installed. Just pop the pins on your pistol or registered SBR lower, pop on this upper and you're ready to roll.
Each complete Ground Zero Precision upper receiver is assembled by one of our certified AR15 technicians to our rigorous specifications and comes ready to pop onto your lower receiver and go.
Every upper receiver we build must pass three thorough inspections and is test fired for functionality and accuracy. Please allow for additional order to ship time as we build these to order.
Includes all of the following:
- Ground Zero Precision A4 Flat-Top 7075-T6 Aluminum Upper Receiver
- 7.5" Heavy Profile 300 Blackout Chambered, 1/7 twist Pistol Barrel - Parkerized Black
- Ground Zero Precision Premium Full-Mass Bolt Carrier Group - Slick Black Phosphate, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested
- Ground Zero Precision Mod 2 .750 Light Weight Low Profile Gas Block
- Seemless Stainless Pistol Length Gas Tube with Roll Pin
- A2 "Birdcage" 5/8X24 Flash Hider with Crush Washer
- Mil-Spec 7075-T6 Aluminum Charging Handle
- Mil-Spec Dust Cover Door Assembly with Pin, C-Clip and Spring
- Mil-Spec Target Forward Assist with Spring and Roll Pin
- Ground Zero Precision 4" Knurled Free Float Tube 7075 T-6 Aluminum, Hard Coat Black Anodized