The M400-TREAD V2 COIL builds on the proven foundation of the TREAD series with factory-mounted upgrades that deliver immediate capability right out of the box. Featuring the same enhanced free-floating handguard and 2-stage Matchlite DUO Trigger that define the V2 platform the COIL edition adds a set of premium accessories designed to maximize performance from the start. – Equipped with a ROMEO5 Gen II compact red dot sight plus an installed M-LOK vertical foregrip and barricade stop the TREAD V2 COIL is range-ready the moment you are. Each component is purpose-built and factory-fitted to work seamlessly with the rifle taking the guesswork out of accessorizing your rifle. – The M400-TREAD V2 COIL is furnished with an accurate 16 stainless steel barrel along with a reliable mid-length gas system for smooth operation and reduced recoil. The barrel is fitted with a 3-prong flash hider and has a versatile 1:8 twist rate. Additional standard features include an ambidextrous safety and magazine release along with integrated QD mounts on the lower receiver. – Treated with a black anodized finish for added resistance to corrosion and wear the M400-TREAD V2 COIL delivers ready-to-go performance with no extra steps required. – Romeo5 Gen II Compact Red Dot Sight – M-LOK Vertical Foregrip and Barricade Stop – 16 Stainless Steel Barrel – Tread Enhanced M-LOK Handguard – Mid-Length Direct Impingement Gas System – 6 Position MAGPUL SL-K Stock – Ambidextrous Saftey and Mag Release – CALIBER 5.56 NATO – SIGHTS ROMEO5 GENII Installed – BARREL LENGTH 16 in [406.4 mm] – BARREL MATERIAL Stainless Steel – TWIST RATE 1:8 – THREADS 1/2 in-28 tpi tapered shoulder – MUZZLE DEVICE SIG 3 Prong Flash Hider – ACTION TYPE Semi-Auto – OPERATING SYSTEM Mid-Length Direct Impingement – STOCK TYPE 6-Position Magpul SL-K – GRIP TYPE Reduced Angle – TRIGGER TYPE SIG 2-Stage Matchlite Duo – TRIGGER SHAPE Flat – MANUAL SAFETY Ambidextrous – FOREND TYPE Tread Enhanced M-LOK Black Alloy – ACCESSORY RAIL M-LOK – MAG TYPE AR-15 – MAGS INCLUDED (1) 30rd Polymer Mag – RECEIVER FINISH Black Anodized – OVERALL LENGTH 16 in – COLLAPSED LENGTH 32.5 in – OVERALL WIDTH 2.6 in – HEIGHT 9.25 in WITH OPTIC INSTALLED – WEIGHT 7 lb