About this stock
CMMG 55CA9D7 Receiver Extension MK4 Black Steel AR Platform is a stock for AR-15.
Match it to your receiver or buffer tube: AR stocks are mil-spec or commercial diameter, and rifle stocks are made for a specific action and barrel contour. Compare the fit details below with your firearm.
Manufacturer details
CMMG's engineering team finely tuned the company's line of Mk4 rifles to ensure that they're one of the most reliable, finely made ARs on the market today. However, that tuned construction means that the Mk4 platforms are built with a few components designed specifically for this rifle, like the receiver extension.
Whether or not you're looking to upgrade your CMMG Mk4 or you're looking to build a faithful recreation of the company's factory rifles, the CMMG Mk4 Receiver Extension is built exactly the same way with the same attention-to-detail as the company's factory-built rifles.
Specifications
- Brand: CMMG
- Fits: AR-15
- Material: Steel
- Finish: Steel
- Rails: Black
- Manufacturer Part #: 55CA9D7
- UPC: 816422020676
Buying from WBT Guns
- Delivery: Ships to your door anywhere in the United States, or pick it up free at our La Mesa store.
- Payment: Pay in full or finance with Credova.
- Questions: Fitment or compatibility questions? Call (619) 667-9453 or email sales@wbtguns.com. FAQ
WBT Guns is family-owned in La Mesa, California, and has served shooters since 2012.
A note on accuracy. Specifications, fitment and images come from the manufacturer and can contain errors or change without notice. If a detail matters to your purchase, call us and we will confirm it before you order. Any compliance notes are general information, not legal advice; California and local laws change, and the rules that apply depend on the firearm the part goes on.
