User Ratings
No ratings yet
Be the first to review this product
The CMMG Mk3 Carbine Receiver Extension and M4 Stock Kit includes 6-position M4 buttstock, CMMG 6-position mil-spec Receiver Extension (Buffer Tube), Buffer Tube Castle Nut, Receiver Endplate, .308 Carbine Buffer, and .308 Carbine Action Spring.
Specifications
- Manufacturer:
- Cmmg
- Category:
- Buffer Tube
- Weight:
- 32 oz (2.00 lbs)
- Length:
- 15.0"
- UPC:
- 815835016566
- MPN:
- 38CA953
- Required Component:
- Yes
Sponsored
Right to Bear
A real attorney picks up the phone
Not a receptionist. Not an answering service. An attorney — available 24/7 if you need them.
Get CoverageWhere to Buy
Have one to sell?
Price History
Current
$129.99
Lowest
$129.99
Highest
$133.99
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertWhat's Included in this Bundle
Related Guides
Guide
AR-15 Components: A Complete Reference Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
The AR-15 Buffer System Explained
A neutral overview of AR-15 buffer systems, covering carbine vs. rifle receiver extensions, buffer weights, springs, and how these parts affect cycling and recoil.
5 min read