The DT Sport has a 16" light weight barrel with a low profile gas block, 1x9 twist, CA Legal Bullet Button, 6 position M4 stock, CAR handguards with single heat shields, and A2 flash hider. The DT Sport comes with 1x 10rd magazine and a CA approved Gun Lock. Shipped with a Chamber Safety Tool in the chamber, clearly showing the weapon is unloaded.