This is Replica Scale Ventilated Tactical Sport Airsoft Pistol is spring powered so all you have to do is cock it and shoot. It's fast, clean, inexpensive and easily maintained. The gun does not require any gas or batteries to operate, it's ready for action right out of the box. If you're looking for a fun, reliable airsoft gun that looks and performs great, then look no further. You're bound to have a blast with this gun in your next backyard airsoft skirmish.