i have a beretta nano, i am using a knife sheath as a mag pouch. this morning as i was putting on my gun and sheath i noticed a rattle. i opened my sheath and a round had came out of the mag and was at the bottom of the sheath. the mag fits good in the sheath and isn't loose inside so i don't know what's going on. now i have carried this sheath with the mag for about 3 months, should i just check the pouch each day or is it cause i'm not using a real mag pouch? thanks for any help