CMMG 308 Premium Lower Parts Kit

308 Lower Build Kit

The CMMG 308 Premium Lower Parts Kit holds the small parts that turn a stripped .308 AR lower receiver into a working fire control housing. A stripped lower is the bare receiver with nothing installed, and this kit supplies the trigger group, controls, pins, springs and pistol grip it needs. It suits home builders finishing a large-frame AR and owners who want a full set of replacement parts on hand.

Features

• Single-Stage Trigger Group — The trigger, disconnector and hammer come with their springs, giving one steady pull with no take-up stage before the break.
• A2-Style Pistol Grip — A black polymer grip with a checkered panel and a finger swell on the front strap, held on with the included screw and lock washer.
• Safety Selector — The safety lever, detent and spring let you switch the rifle between safe and fire.
• Bolt Catch Assembly — A serrated bolt catch with plunger, spring and roll pins locks the bolt to the rear on an empty magazine.
• Magazine Catch And Button — The threaded catch, spring and button release the magazine when pressed.
• Takedown And Pivot Pins — Both receiver pins are included, along with their detents and springs, so the upper and lower halves join and separate as designed.
• Hammer And Trigger Pins — Two grooved pins locate the hammer and trigger inside the receiver.
• Black Finish — The metal parts carry a uniform black finish that matches a standard AR build.

What You Should Know

This kit is built for 308-size AR lowers, which are larger than AR-15 receivers, so standard AR-15 parts and this kit do not interchange in every position. Large-frame .308 receivers come in more than one pattern, so check your receiver maker's specification before ordering. The lower receiver, buffer tube, buffer, spring and stock are not part of this kit.