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Stock Assembly, A1 by CMMG. A1 rifle buttstock with a rear storage compartment and sling mount. Made from high-strength polymer for durability. Compatible with rifle-length buffer tubes on AR-15, AR-10, and LR-308 platforms. Lifetime Quality Guarantee.
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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