What's in the Box Nexgen NG-15 300 Blackout Semi-Auto Rifle (1) 30-Round Magazine Cable Lock Owner's Manual The NG 15 combines all of the durability and reliability the Ready Series is known for with streamlined, no-nonsense features designed for dependable performance and versatility. Firearm Features 15" M-LOK aluminum handguard with full-length Picatinny top rail Low-profile .750 gas block for a clean, lightweight profile Nitride bolt carrier group for enhanced durability Mil-spec charging handle 6-position adjustable stock Standard pistol grip Hard coat anodized finish Firearm Specifications Manufacturer: Nexgen Model: NG-15 Caliber: 300 Blackout Barrel Length: 16" Threaded Twist Rate: 1:8" Finish: Black Magazine Capacity: 30 Rounds