BudsGunShop.com - Chrome lined barrel?

NO, the "Sig M400 TREAD" does NOT have a Chrome Lined Barrel...This Rifle has a STAINLESS STEEL Barrel with a 1 in 8" Twist Rate which is one of the Best Barrel materials and Twist Rates when it comes to accuracy and performance.

A good practice is to check with the manufacturer’s website. As of this writing, the specifications state that the barrel is stainless steel.

Yes, the barrel is chrome lined.

Drew, yes Sir. The M400 has a 16-inch chrome-lined 16" Stainless Steel (Matte Bead Blasted Finish) barrel with a 1:7-inch twist.

The M400 barrel is hammer forged chrome moly vanadium, meeting the material mil-spec. It is not nitrided. It is phosphate-finished with a chrome lining, and proof tested.