i just bought the smith and wesson m&p15 .223
my question is what would be the recommended ammo to use,stamped on the barrel it says 5.56 nato. would it be better to use the standard .223 rems. i heard the nato causes to much pressure and in the long run could ruin the gun...
my question is what would be the recommended ammo to use,stamped on the barrel it says 5.56 nato. would it be better to use the standard .223 rems. i heard the nato causes to much pressure and in the long run could ruin the gun...