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Faxon AR-15 Duty Series Gunner Complete Upper Receiver Assembly 7.62x39mm 16" Barrel Suppressor Ready. The Faxon Duty Series Gunner Complete Upper Receiver Assembly is built for dependable, duty-grade performance with balanced handling. Centered around Faxon's Gunner Barrel, this upper is designed for training, patrol, and defensive applications where reliability matters. It features a Gunner profile with a fixed gas block and is suppressor-ready.
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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