User Ratings
No ratings yet
Be the first to review this product
Replacement AR .308 Mk3 Carbine Action Spring. Manufacturer: CMMG. Compatible with AR-308 LR-308 carbine platforms.
Specifications
- Manufacturer:
- Cmmg
- Category:
- Buffer Spring
- UPC:
- 815835015071
- MPN:
- 38CA98E
- Required Component:
- Yes
Sponsored
Wheeler Tools
Your AR deserves a real armorer's kit
Everything you need to assemble, adjust, and maintain your rifle — in one kit.
Shop ToolsWhere to Buy
Have one to sell?
Price History
Current
$6.69
Lowest
$4.69
Highest
$6.69
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