Butler Creek Asap Magazine Loader Universal Single Stack Magazine 9MM-45Acp. 45 ACP. Fill magazines with one action - push the mag loader down insert the round below the feed lips and raise the loader up. Bullet seated magazine loaded. Just like that.Works with most single stack magazinesUses only one action to load magazine made in specialized factories Package Contents: Butler Creek Asap Magazine Loader Universal Single Stack Magazine 9MM - 45Acp Butler Creek BCA1XSML: Asap Magazine Loader Universal Single Stack Magazine 9MM-45Acp