What's in the Box Diamondback DB-15 5.56 NATO Semi-Auto Rifle (1) 30-Round Magazine Cable Lock Owner's Manual The Diamondback DB15 features a Multicam receiver, B5 Bravo stock, grip and foregrip; A2 flash hider, OAL 33"-36"; threaded barrel; front & rear QD and hand stop. Includes 30rd Magpul Gen M3 PMAG w/window. Firearm Features Chrome Moly Vanadium Barrel w/ A2 Flash Hider Picatinny Rail B5 P Type 23 Grip 1/2"x28 Thread Firearm Specifications Manufacturer: Diamondback Model: DB-15 Caliber: 5.56 NATO Barrel Length: 16" Threaded Twist Rate: 1:8" RH Finish: Multicam / FDE Magazine Capacity: 30 Rounds