Went to the range again Sunday,put about 250 rounds through it.Still shooting well & no probs.I figure it's fired about 1800 rounds.A month or so ago did a little adjustment on the rear sight and seems to be more accurate.
I actually changed out that rear plastic sight on the SD and put an M&P sight in it. That made a world of difference.
Finally got new sights.Got 'em thru Amazon and are called TruGlow.Green rear,red front.Now just gotta get to the range to adjust 'em.