• Fires 6mm, .12g airsoft BBs • Blowback Action • Powered by (4) AAA batteries (8 are included) • Built-in Hop-Up system • Fixed front and rear sights • Semi/Full auto action • 16-round drop-out magazine • Accessory rail Two magazines Approximately 400 rounds of .12 BBs The Heckler and Koch P30 Electric Airsoft pistol is a fun shooting electric operated BB gun. It uses batteries not only to propel the BBs but to kick the slide back, adding an extra kick of realism. Oh, and this P30 will shoot in full-auto mode, too! UMAREX holds the worldwide exclusive HK-trademark and exterior design copy license for use with this UMAREX product, granted by HK Im getting rid of this because I have no use for it. I used it once for an airsoft field and shot about 100 rounds, but I haven't used it since, and I don't use it on the field. Really good gun, basically new.