by Sig Sauer
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Sig Sauer M400 Tread V2 rifle chambered in 5.56 NATO with a 16 inch stainless steel barrel. Includes ROMEO5 GEN II red dot sight. Features a 6-position SL-K stock and a single-stage flat trigger. Ready to fire as a complete AR-15 style rifle.
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Sign In to Set AlertThis is a bundled product that includes multiple components. The exact contents may vary - check the product description for more details.
• Complete assembly ready to use
• Multiple components included
• Value package pricing
Guide
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