talked to the les baer lady who said no problem to the single safety, no problem to the naked slide, but i could not get vertical slide serrations. it comes just like the picture. that's about a 4 degree shift on a vise in a milliing machine. hey, i don't make my living selling firearms. cool with me. so now it appears the sa gi is back off to the sacs for about 1300 worth of work and excactly what i want. what a shame.