0 = single shot for rifle grenade launching
1 = normal semi auto
2 = adverse conditions semi auto (ie. very dirty, short stroking, etc...)
Take the gas plug out and look at the holes in it, the little one is the 1 setting, the big one is the 2 setting, lets much more gas into the piston cylinder.
1 = normal semi auto
2 = adverse conditions semi auto (ie. very dirty, short stroking, etc...)
Take the gas plug out and look at the holes in it, the little one is the 1 setting, the big one is the 2 setting, lets much more gas into the piston cylinder.


















































