The Sig Sauer M400 Tread is a top-of-the-line AR-15 style rifle that boasts an impressive array of features. The aluminum receiver set is coated with a durable and scratch-resistant hard coat anodized finish, making it a reliable choice for any shooter. The ambidextrous controls are a great addition for left-handed shooters, allowing for easy manipulations from the support shoulder. The upper of this Sig M400 is paired with a 16-inch stainless steel barrel with a 1:8 twist, making it capable of stabilizing a variety of bullet weights. The mid-length gas system is optimized for the barrel length, providing reduced wear and recoil with superb reliability. To further reduce recoil, the muzzle is fitted with a 3-chamber muzzle brake that fights muzzle climb and keeps you on target during rapid fire.