by Sig Sauer
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SIG SAUER MCX 5.56 Pistol 5.5" PCB AL MLOK HG 30rd Rattler. Type: AR Pistol, Action: Semi-Auto, Caliber: 5.56x45mm NATO, Barrel Length: 5.50", Capacity: 30+1, Grips: Black Polymer, Sights: None, Optic Ready, Weight: 5.10 lbs, Metal Finish: Black, Stock Material: Synthetic, OAL: 23", Stock Finish: Black, Stock Type: Folding Pistol Stabilizing Brace, Barrel Length Range: 5" to 5.99", Weight Range: 5 lbs to 5.99 lbs
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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