Open Box Return-CMMG MK3/AR-10 Zeroed Lower Parts Kit with Ambi Safety Selector

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Returned items may be scuffed or scratched, packaging may be damaged. Guaranteed fully functional!

Color-Coded Lower Parts Kit For Easy Assembly For AR-10

The CMMG MK3/AR-10 Zeroed Lower Parts Kit is a complete package consisting of high-quality USA-made parts designed to finish off an MK3/AR10 stripped lower receiver. All parts come in convenient color-coded packets to make assembly a breeze and are designed to meet or exceed mil-spec specifications to ensure the smoothest operation possible of the AR-10 rifle.

This LPK includes the Zeroed Pistol Grip, Trigger Assembly, and a 60°/90° Adjustable Ambi Safety selector making it a great option to start your next build.

NOTE: Not all .308 lowers have the same specifications. This LPK is designed to work with CMMG lowers as well as Gen 1 DPMS High-Pattern LR-308. We recommend checking with the manufacturer of your lower for compatibility of parts.

High-Quality USA-Made Parts

The CMMG ZEROED lower parts kit is designed for the harshest conditions with parts made of the highest quality materials to ensure long-term use. These parts are guaranteed to fit and function in your AR-10 and are also perfect for replacing lost or damaged parts.

Don’t forget a Buttstock or Brace kit to complete your AR-10 lower receiver.

Package Includes:

  • ZEROED Extended Bolt Catch Mk3
  • Bolt Catch, Plunger, Spring, & Screw Pin
  • Trigger & Trigger Spring
  • Disconnector & Disconnector Spring
  • Hammer & Hammer Spring
  • Trigger/Hammer Retaining Pins
  • ZEROED 60°/90° Adjustable Ambi Safety, Detent, & Spring
  • ZEROED Ambi Magazine Catch & Spring
  • ZEROED Extended Magazine Release Button
  • Mk3 HD Pivot/Takedown Pins, Detents, & Springs
  • ZEROED Pistol Grip, Grip Screw, & Washer
  • Buffer Retainer & Spring

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Customer Reviews

Based on 1 review
George Hard R Martin
Bolt catch issues

Had issues with the bolt catch (aero upper and lower) several other reviews around the web say the same

Everything else was fine