Rapid Assault Carbine model of the Scarab series. Modern variant of the MK16 assault rifle. Quick-change spring system lets you to quickly transition between CQB and long range. Low resistance wiring to maintain operational temperature and durability. Electronic trigger system for instant response. 3 position stock for personal comfort preference. Ambidextrous fire selector/magazine release. Pre-installed 6.03mm tightbore inner barrel to ensure precision. Compact metal construction for lightweight build.Specifications: Operation Electric AutomaticBuild Metal/outer barrel, handguard, rail, stockFiring Modes Semi-automatic, Full-automatic, w/ Functional SafetyMuzzle Velocity 370-380 FPS w/ 0.2g BBsGearbox Full Metal Version 2Magazine 300rd High CapacityInner Barrel 6.03 mm (diameter)Hop-Up AdjustableWeight 7lbs 1X Rifle