Krytac AEGs are the cream of the crop for Out Of The Box or OOTB guns. Some OOTB guns have better mosfets, but dont have the visceral performance and reliability these guns have. Krytac AEGs have everything a decent tech would do to their guns done out of the box. They have a built in, basic, MOSFET that protects the trigger contacts from corrosion using high voltage batteries. They have an extended bumper on the back of the cylinder head that adjusts the piston to the right place, this lines up the piston teeth and gear teeth properly which extends the lifetime of the piston. The sector and bevel gears are properly shimmed and the spur gear uses a spring shim to keep it in its proper place. Krytacs include a balanced high speed/high torque, neodymium magnet motor for fast trigger response and a high rate of fire. Krytacs also include a tight bore precision barrel, and rotary style hop up unit that's easy to adjust, numbered for reference, and stays where you adjust it.