This Krytac-produced P90 replica is a cut above the common P90 Airsoft AEG. Featuring creature comforts that those familiar with the platform would be happy to hear about; This P90 sports a Krytac gearbox, with their famous in-line MOSFET, standard 8mm bearings, automotive fuse, Deans battery plug, and quick change spring mechanism. The trigger mechanism now also works like the real P90, with a functioning dual stage trigger unit when the PDW is in full-auto. An enlarged hop-up door to accommodate the usage with gloves can be manually opened, or by pulling the charging handle to the rear will open the hop-up window, revealing a rotary hop-up. Brand new to the P90 is also a 200 round or 50 round convertible magazine that has a magazine cut-off function, making the gun cease fire when you are out of ammunition. If convenience is also your thing, the body of the this PDW also has a small hole, near the trigger grip that allows for motor height adjustment along with a removable gearbox plate, allowing one to access the gearbox for regular maintenance. The upper receiver also comes with individualized serial numbers laser engraved on the side, and an integrated front sight inside the optic mount, though there are also 2 side-mounted backup sights as a holdover from the P90 with the built in optic.