These 200 round SAW pouches are a great way to carry all your ammo for your M249. The pouch can fit a 200 round SAW drum or 200 rounds of loose linked ammo.
You can secure the pouch closed with two flaps. Also, you can link these flaps together. The flaps secure by a hook and loop field and button snaps for additional safety. The pouch makes for a great pouch to carry a lot of USGI M4 mags, or just anything bulky that you need a pouch for.