User Ratings
No ratings yet
Be the first to review this product
The CMMG MK9 AR-15 9mm Carbine Buffer is a replacement buffer for AR-15s/M4s that are chambered in 9mm Luger using a carbine receiver extension. Fits AR-15 rifles chambered in 9mm Luger / CMMG MK9 or similar pattern variant using a carbine receiver extension.
Specifications
- Manufacturer:
- Cmmg
- Category:
- Buffer
- UPC:
- 815835013503
- MPN:
- 90CA9B4
- Required Component:
- Yes
Sponsored
Right to Bear
Legal protection if you ever use your firearm
No recoupment clause. Real attorney on the hotline. All 50 states, all means of self-defense.
Get CoverageWhere to Buy
Have one to sell?
Price History
Current
$25.39
Lowest
$25.39
Highest
$32.49
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertRelated 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
Guide
Left-Handed AR-15 Builds: Ambi Controls and Component Selection
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read