7.5" Free-Floated KEYMOD 300 Blackout AR15 Upper Receiver - No BCG, No CH - $250.74

Ground Zero Precision

New Member
Lifetime Member
Apr 11, 2015
Trenton, Texas
7.5" Free-Floated KEYMOD 300 Blackout AR15 Upper Receiver - No BCG, No CH - $250.74 - SAME DAY SHIPPING!!!

Sale Price Good from 4/6/16 - 4/15/16 or while supplies last!
Building your own custom free floated AR15 300 Blackout Pistol is a snap when you have all of the right parts. It's even easier when someone has already done the legwork to source all of the components, made sure they are of the highest quality and fit, BUILDS AND TESTS THE UPPER RECEIVER and then put them all into a nice little package for you.
Well that's exactly what we have done and it's absolutely awesome!
Each complete upper receiver sold by Ground Zero Precision is assembled by one of our certified AR15 technicians to our rigorous specifications, range tested for functionality and accuracy and comes ready to pop onto your lower receiver. Just add your charging handle and bolt carrier group and you're ready go.
Components and Specifications:

Barrel -

Ground Zero Precision's Premium 300 Blackout chambered 7.5 inch Lightning Series Barrel is precision CNC machined from 4150 Chrome Moly Vanadium steel with a corrosion resistant Parkerized finish and M4 feed ramp extension. Pistol length gas system.
Barrel Specifications:
Material4150 Chrome Moly Vanadium
ProfileHeavy Duty
FinishCorrosion Resistant Parkerized - Black
Gas System LengthPistol
Gas Block Journal.750"
Twist Rate1:7
Muzzle5/8 X 24 Threaded
Weight13 oz

Upper Receiver:

Ground Zero Precision upper receivers are manufactured for us in the United States by a major military and NASA contract to U. S. Military Specification. Forged from 7075 T-6 Aluminum and hard coat type III class III anodized in matte black for durability and reliability in the most extreme of environments.
Upper Receiver Materials and Specifications:

  • Manufactured to U. S. Mil-Spec
  • Forged 7075 T-6 Aluminum
  • M4 Upper Receiver with M4 Feed Ramps
  • 1913 Picatinny Rail Flat Top
  • Multi-Caliber Capable
  • Hard Coat Anodize Type III Class II
  • Matte Black Finish
  • Mil-Spec Ejection Port Cover
  • Mil-Spec Ejection Port Hinge Pin
  • MIl-Spec Ejection Port Hinge Pin C-clip
  • Mil-Spec Ejection Port Spring
  • MIl-Spec "Target" Forward Assist - QPQ Nitride Finish
  • Mil-Spec Forward Assist Spring
Additional Components and Specifications:

  • 5/8 X 24 "Bird Cage" Flash Suppressor - QPQ Nitride Finish
  • Seamless Stainless Steel Pistol Length Gas Tube
  • Steel .750 Ultra-Low Profile Gas Block
  • 7" 7075 T6 Aerospace Grade Aluminum Keymod Free-Float Rail System


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