The Sig Sauer M400 Forge Concrete is a premium modern sporting rifle that upgrades the Tread V2 platform with a distinctive Concrete Gray Cerakote finish for enhanced corrosion resistance and a unique aesthetic. This configuration features a 16-inch stainless steel barrel with a versatile 1:8 twist rate and a three-prong flash hider, optimized for consistent accuracy across various bullet weights. It utilizes a mid-length gas system for a smoother recoil impulse and includes the SIG Matchlite Duo two-stage trigger for a crisp, match-grade break. The package is completed with an engraved M-LOK free-floating handguard, ambidextrous controls, a 6-position Magpul SL-K telescoping stock, and a factory-installed ROMEO-MSR Gen II red dot optic, providing an elite-tier tactical setup ready for duty or recreational use. Sig Sauer M400 Forge 5.56 Nato Rifle 16"Bbl CHF w/ Romeo-MSR Gen II Telescoping Stock Two-Stage Trigger MLOK Hg 1x30Rd Mag RM400-556N-16B-FORGE-CON