The IWI ZION Z-25 is a semi-automatic rifle chambered in .308 Win (7.62 NATO) with an 18-inch barrel finished in black nitride. The rifle includes a 20-round PMAG and features a Bravo Company B5 stock. This model is designed as a modern sporting rifle.Key FeaturesIncluded Magazines: Ships with one 20-round PMAG.Barrel Length: Fitted with an 18-inch barrel.Rate of Twist: 1:10 twist rate for bullet stabilization.Thread Pattern: 5/8"x24 thread pattern for muzzle devices.Stock Material: Synthetic stock for durability.Overall Length: Measures 35.5 inches, adjustable from 35.5 to 38.875 inches.