Sig Sauer M400 Forge Features The Sig Sauer M400 Forge in Concrete Gray Cerakote brings the same premium engineering as the standard platform with a hardened corrosion-resistant finish that performs as well as it looks. The 16 cold hammer forged steel barrel with FNC finish ensures long-term accuracy and durability under sustained use. The mid-length gas system smooths out the recoil impulse keeping the rifle flat and controllable through rapid strings of fire. A 15 M-LOK handguard with full Picatinny rail keeps the setup modular and lightweight while leaving room for any accessories the shooter requires. The 5.56 AR-15 rifle platform shines here with a TriggerTech 3.5-pound two-stage flat blade duty trigger that delivers a crisp repeatable break shot after shot. The 6-position Magpul SL-K stock and ambidextrous charging handle round out a build that fits any shooter right out of the box. Sig Sauer M400 Forge Specifications Manufacturer: Sig Sauer Model: M400 Forge Caliber: 5.56 NATO Barrel Length: 16 Barrel Material: Cold hammer forged steel Barrel Finish: FNC Barrel Twist: 1:7 Overall Length: 32.25 collapsed 35.5 extended Overall Height: 9.4 with optic 7.2 without optic Overall Width: 2.7 Weight: 6.8 lb. with magazine Magazine Capacity: 30 rounds Frame Material: Alloy Frame Finish: Concrete Gray Cerakote Trigger: TriggerTech 3.5-pound two-stage flat blade duty trigger Sights: ROMEO-MSR Gen II 2MOA red dot Stock: Magpul SL-K 6-position Handguard: 15 M-LOK with full Picatinny rail Charging Handle: Ambidextrous