Caliber: .350 Legend. Capacity: One 10- or 20-round magazine. Barrel: 16 in. M4 Contour, 1:12 RH twist, Aura XTD muzzle device. Stock: B5 Bravo. Grip: B5. Handguard: 15 in. FSR. Sights: Optics ready 12 o’clock full-length Picatinny rail. Weight: NA. Trigger: BFSIII Binary Trigger or custom tuned. Overall Length: NA. Features: 350 Legend was designed for use in several American states that have specific regulations for deer hunting with straight-walled centerfire cartridges. It has the same rim diameter as a 5.56 case (.378 in.), so it can use the same bolt. Rounds will fit in a modified AR magazine. MFT EVOLV charging handle, mid-length gas system, low-profile gas block, salt bath nitride bolt carrier, FAI-15 lower.