 uh press the button uh when i did that it was a game changer for me it made me love to shoot it after that i didn't like to shoot it before then tell you the truth but remember now this is something i bought about 20 25 years ago out of a magazine through a gun store and and it had a that came with the double stack it held uh 11 rounds plus plus one anyway so only thing i did the only thing i'm disappointed is is only have one magazine