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MBA-1 buttstock kit for AR-15. Includes MBA-1 buttstock with adjustable length of pull and adjustable cheek rise, A2 buffer extension tube, standard buffer, and .223/5.56 buffer spring. Designed to configure your lower for a working A2 rifle buffer system.
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$178.55
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$153.04
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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