American Made Parts for American Rifle Builders


CMMG Gun Builder's Lower Parts Kit, Without Grip/Fire Control Group, 308WIN, Black Finish

Retail: $49.95
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The CMMG Gunbuilder's Lower Parts Kit allows you to pay for only the parts you need and nothing you don't.  To complete your .308 lower receiver you will need to add your choice of complete fire control/trigger group, trigger guard, pistol grip assembly, buffer, buffer spring, receiver extension, receiver end plate, castle nut, and butt stock to the contents of this package.

All parts are 100% made in the USA.

Lower Parts Kit Includes: 

  • .308 takedown pin
  • .308 receiver pivot pin
  • takedown pin detents (2)
  • takedown pin detent springs (2)
  • bolt catch
  • bolt catch plunger
  • bolt catch screw
  • bolt catch spring
  • buffer retainer
  • buffer retainer spring
  • magazine catch
  • magazine catch spring
  • magazine release button
  • safety selector
  • selector detent
  • selector detent spring
  • lock washer