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PSA Complete Lower with B5 Systems furniture. Forged 7075-T6 Aluminum lower receiver designed for AR-15 platforms. Includes a B5 Bravo Stock, P-Grip 23, and Trigger Guard. Features a two-stage Nickel Boron trigger upgrade for a MIL-SPEC compliant fire control group. Ready to mate with a complete upper.
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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