I got the MA17 3 days ago and I love it, it can hold a KJW KP-08, a can on green gas, 2 m4 mags,and a training knife easily. however; I use it to hold my voodoo battle belt when I'm not using it. the bag has a pouch on the side that to pic up top doesn't show that I use to hold my gloves, and up top there is Velcro that gives you the option for patches. under the Velcro there is an opening that you can easily put your empty mags or what ever you want with out unbuckling it. inside the bag their is a wall of Velcro that I use to store patches, and both left and right side of the bag can be moved and put together in the back( for reasons I don't know)and in the bag in the back has a hidden pocket. all-in-all I love this bag( even if it's hard to move in sometimes) and I would recommend it to any one.