we have just hit 5000 rnds out of the little mp 9 without one and i mean nodda one hickup,hitch just wide open by numerous le depts. and just about anyone that wants to shoot it . oh what the heck it has all been doced and tortured and just plain abused by all that have shot it. tto see what smith actually came up with . all the info and talk is on s&w forum under mp9 all the way. thanks and good shooting ....celt