Description

13.5″ available 7/5 12:00PM EST

The Zero Group MFG Builders Kit combines our MK 0 stripped lower, MK 0 stripped upper, and ZRX SQD rail into one hand selected matched set. This insures tight fitment with minimal “slop” between upper and lower receiver. The included upper and lower receiver in each set are machined to exceed Mil-Spec requirements from 7075-t61 forged aluminum. The ZRX SQD is milled from aircraft grade 6061 aluminum, resulting in a rail that is robust and durable while maintaining a light and manageable weight. Our SQD rail features 7 sided Mlok and integrated 4140 steel QD cups at the 3 O’clock and 9 O’clock positions at the muzzle end of the rail. The SQD is Secured to the upper receiver via an included stainless steel barrel nut and the tried and true Wedge Lock system. The MK 0 builders kit is the perfect foundation for that next ground up zero compromise workhorse build!

Lower Specifications:

  • Machined from American made 7075-T651 forged aluminum
  • Machined to exceed Mil-Spec requirements
  • Class 2 Type 3 hard coat anodize
  • Flared magwell

Upper Specifications:

  • Machined from American made 7075-T651 forged aluminum
  • Machined to exceed Mil-Spec requirements
  • Class 2 Type 3 hard coat anodize
  • M4 feed ramps

Rail Specifications:

  • 6061 Aluminum
  • 7 Sided MLOK
  • Integrated 4140 QD Cups
  • Type III Hardcoat Anodize

**THIS PRODUCT REQUIRES SHIPPING TO A LICENSED FIREARMS DEALER. PLEASE EMAIL [email protected] WITH YOUR ORDER NUMBER AND LOCAL FFL’S INFORMATION.**