aolamegs 24 magazine holder .50 cal ammo can foam (pre-cut, military grade foam)- 24 pistol magazine foam insert for ammunition box (m2a1) - replaces gun clip pouch aolamegs do you have an extra steel .50 cal ammo can lying around? why not convert it into a nice 24 pistol magazine carrier? with the premium tactical supply .50 cal steel ammunition box 24 magazine pistol foam insert, you can load up 24 pistol mags in a very safe, reliable, and nifty looking carrier. fits in any standard .50 cal m2a1 steel ammunition box (length and width dimensions of the foam are 11" x 5 5/8"). this kit does not come with a steel ammo can, just the foam inserts. the kit comes with three pieces of foam: one piece that you will glue to the top, another piece for the base, and the main piece with the 24 cutouts that slides right into the can. use this kit to carry all types of magazines.