Aero/GZP Stainless .223 Wylde AR15 Upper Receiver - 1615M-SS

$ 541.10

Sold Out


MSRP: $441.10

We're kicking off our February 2019 sale a little early with these hand built and tested, solid and accurate stainless .223 Wylde chambered complete AR15 upper receivers! Built in a very limited quantity and ready for immediate shipment in partnership with our friends at Aero Precision, these complete AR15 upper receivers are an outstanding value that we know for a fact you're going to love.

Each complete upper receiver sold by Ground Zero Precision is assembled by one of our certified AR platform technicians to our rigorous specifications, pressure and functionality tested and comes ready to pop onto your lower receiver.

Components and Specifications:

Barrel - 

Ground Zero Precision's Premium 16 inch Government Series Stainless .223 Wylde chambered barrel is precision CNC machined from 416R stainless steel and fitted with a perfectly aligned M4 feed ramp extension.

Barrel Specifications:

Length 16"
Material 416R Stainless Steel - Heat Treated to RC 28-32 Hardness, and Stress Relieved
Profile Government - M4 Contour
Finish Natural Stainless
Gas System Length Carbine
Gas Block Journal .750"
Twist Rate 1:8
Muzzle 1/2X28 Threaded
Other Specs N/A


Upper Receiver:

Aero Precision's AR15 upper receivers are one of our most popular products. Forged from 7075-T6 aluminum, this upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps. Match this upper with your own or one of our AR15 lower receivers for a solid and dependable fit.

Upper Receiver Materials and Specifications:

  • Manufactured in the U. S. by Aero Precision
  • Forged 7075 T-6 Aluminum
  • M4 Upper Receiver with M4 Feed Ramps
  • 1913 Picatinny Rail Flat Top with T-marks
  • Hard Coat Anodize Type III Class II
  • 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 - Phosphate Finish
  • Mil-Spec Forward Assist Spring

Additional Components and Specifications:

  • Phosphate Bolt Carrier Group: Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Black Phosphate finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested - No Logo, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Black Phosphate Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  • 1/2X28 "Bird Cage" Flash Suppressor - Black Nitride Finish
  • Mil-Spec Charging Handle - 7075 T-6 Aerospace Grade Aluminum, Hard Coat Anodized (Black) to MIL-A-8625
  • Seamless Stainless Steel Carbine Length Gas Tube
  • GZP Super Performance Micro Gas Block - Black Nitride Finish
  • 15" GZP Ultra-Light M-Lok Free-Float Rail - 7075 T6 Aerospace Grade Aluminum, Hard Coat Anodized to MIL-A-8625