AAP-01 DRUM MAGAZINEThe AAP 01 Drum Magazine from Action Army gives you nearly bottomless fun on the airsoft field. This gas drum magazine holds 350 BBs, and is filled using the extra large easy fill cover. Instead of a winding wheel, this magazine uses a flash mag pull string for ease of loading. A QD sling socket on the back allows you to attach a sling to protect your magazine from being accidentally dropped. The AAP 01 Drum Magazine is compatible with all TM spec