The Heckler & Koch MP5K AEG rifle is a full metal, heavy high-quality airsoft gun. This HK MP5K features a full metal gearbox. The hop-up is fully adjustable with a side lever switch near the front handguard. The battery goes in the top upper receiver (stick type only). NOTE: this airsoft gun will only work with Elite Force MP5 Magazines. One (1) hicap 200 round magazine is included in its box. Does not include PDW stock or scope mount. Battery and charger are not included. AEG Airsoft Rifle Competition Grade Full-metal build Includes one hi-cap magazine 200 Round Capacity Semi and Full-Auto Selector 280 fps Recommended battery: 9.6V 1600 Magazine SKU Number 2275054 Licensed trademark of Heckler & Koch GmbH Recommended Battery, Elite Force 9.6v Stick 2211009