User Ratings
No ratings yet
Be the first to review this product
Spring for AR15 ejector, AR15/AR10 selector detent, and spring-loaded 10mm/.40 S&W/9mm/.45 ACP Radial Delayed Blowback ejectors.
Specifications
- Manufacturer:
- Cmmg
- Category:
- Buffer Spring
- MPN:
- 55CA79B
- Required Component:
- Yes
Sponsored
Right to Bear
Self-defense coverage in all 50 states
Covers all means of self-defense — not just your firearm. Starting at an affordable monthly rate.
Get CoverageWhere to Buy
Have one to sell?
Price History
No Price History Available
Check back later for pricing trends
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