Accepting Sig Sauer M17/P320 magazines, the CMMG Mk17 delivers a new level of performance to the PCC world. Not only is it on an elite playing field in terms of fit and function, the Mk17 brings out all the features you’ve come to expect from CMMG, including Last Round Bolt Hold Open. Designed to operate exclusively with our Radial Delayed Blowback upper, or build using our Barrel and Bolt combo.

Compliance Notice (Washington Residents):
This item is a frame or receiver only and is not a complete or operable firearm. Washington law regulates the manufacture, importation, distribution, sale, and offer for sale of “assault weapons” as defined in RCW 9.41.010 and RCW 9.41.390.

A frame or receiver standing alone is a part of a firearm. Any future assembly must comply with all applicable federal, state, and local laws. Manually operated firearm configurations (e.g., bolt, lever, slide, pump) are excluded from the statutory definition of an “assault weapon.”