Metal upper and lower receivers, all Ronin uppers can be used on any Ronin lower, allowing for one rifle to fill a variety of different roles, from SBR to DMR 30/120rd. magazine cut off compatibility CNC machined 15" Keymod handguard allows for easy integration of most popular accessories Enlarged trigger guard and ambidextrous fire controls make weapon manipulations easy AEG3 gearbox allows realistic recoil feedback; reinforced and radiused gearbox One piece rotary hop up Switch lift extender prevents the burnout of trigger contacts PTS Flip up iron sights, trigger guard, and EPG pistol grip installed Package Includes: Gun, Magazine, Manual • 7 magazines total