The easiest and cheapest way I found is with Homedepot or similar zippered cordura pouches. HD called them document organizers and Milwaukee calls them small part pouch. Sharpie the gun info on it and call it a day. Only drawback is the mags are loose in there. If you are looking to carry a Murica level of magazines to the range than the smallest mechanic bag u can find works great too and plenty of room for ammo boxes.