AR15 Lower Parts Kit, Butt Stock, Buffer Tube Assembly - CMMG



Good job on getting your lower receiver milled and drilled. And if you bought yours as an already fully stripped lower, well you don't get craftsmanship points, but thanks for showing up. Now finish your lower assembly off with this kit. It's got what you need: a lower parts kit, butt stock, and buffer tube assembly. 

Check out all the parts in your bundle's lower parts kit:

Lower Parts Kit:

Clear Bag
  • Pivot Pin
  • Pivot Pin Detent
  • Pivot Pin Detent Spring
  • Takedown Pin
  • Takedown Pin Detent
  • Takedown Pin Detent Spring
Yellow Bag
  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
Red Bag
  • Hammer Pin
  • Hammer Spring
  • Trigger Pin
  • Trigger Spring
  • Disconnect
  • Disconnect Spring
Blue Bag
  • Magazine Catch
  • Magazine Catch Spring
  • Magazine Release Button
  • Trigger Guard
  • Trigger Guard Roll Pin
Green Bag
  • Safety Selector
  • Selector Detent
  • Selector Detent Spring
  • Pistol Grip Lock Washer
  • Pistol Grip Screw
No Bag
  • Hammer
  • Pistol Grip
  • Trigger

Butt Stock Kit: Your butt stock kit includes an adjustable carbine stock and buffer tube assembly. This new take on the old Colt-style design is adjustable and constructed from a durable polymer composite.

Buffer Tube Assembly: This assembly consists of a six-position buffer tube, castle nut, latch plate, buffer, and buffer spring. When you're finished building your lower assembly together, check out our upper assemblies to complete your build here.

No FFL required  Made in the USA  Lifetime Warranty

Shipping Restrictions only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, New Jersey, New York, Pennsylvania, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.