About this stock
This is CMMG's factory action spring for Mk3 rifles. The action spring sits in the buffer tube behind the buffer and drives the bolt carrier forward after each shot. Replace it when it weakens to keep cycling reliable. It is a genuine CMMG part.
Specifications
- Brand: CMMG
- Fits: AR-15
- Manufacturer Part #: 38CA9EB
- UPC: 810046232170
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.
