WHAT DOES SMITH & WESSON M&P15 SPORT II SEMI-AUTO RIFLE MEAN?

The protection sits over the left; two positions with forward to fireplace and rear for Safe and sound with trigger locked, but the bolt however totally free to function, followed by a rear Solid aluminium shroud with a lessen cocked indicator. Some of the more mature rifles have seen some troubles with these shrouds but all has long been sorted an