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CMMG Spring Buffer Retainer AR15. This buffer retainer spring is engineered to deliver the precise tension needed to keep the AR-15 buffer and buffer retainer securely in place within the receiver extension. Its durable construction ensures reliable compression and long-term performance, maintaining proper alignment of the buffer system during cycling. Ideal for new builds, repairs, or routine maintenance, this small but essential component helps ensure smooth operation and consistent function …
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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
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
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.
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