This is a Classic Army brand CA-33E airsoft rifle. I used this beauty for years back when I used to go airsofting with my buddies. I had the base model modified with an extended barrel for increased range and accuracy. I also had an upgraded spring put in, but since it hasn't been used for a few years the spring is probably compressed now and should probably be replaced. (original spring is still included) Included: Classic Army CA-33E Airsoft Unit (with upgraded barrel) Magazine Battery Battery Charger Alternate Muzzle Attachments Lots of Various Weight BB's OEM Spring Extra Parts that don't fit this unit but may be useful for other airsoft units such as; tac laser (no batter) and under-barrel grip. Note: To use this you will most likely just need to replace the spring and get a tune up. The battery is pretty old and might need to be replaced as well.