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Alexander Arms .50 Beowulf Upper Receiver Build Kit. Includes complete upper receiver, 12 inch or 16 inch barrel, carbine length gas system, 1:20 twist, threading 49/64x20 RH, thread protector, charging handle, gas block, dowel pins, gas tube, complete bolt carrier group (BCG) with bolt, and one 7 round magazine. The kit is compatible with AR-15 platform.
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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 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