I have Barsto barrels in mine. Unless you shoot lead it is not worth the money.
I've had good luck with aftermarket barrels (Barsto and Jarvis). I've seen about a 40-45% reduction in group size vs. stock for Gen4s at 25 yards for 10-round average groups and my Gen 4's weren't bad to start.
I have Barsto barrels in mine. Unless you shoot lead it is not worth the money.
Is it fitted out of curiosity? I figured having a Gen 4 9mm capable of shooting a 1.5" group or better with good ammo would be a pleasant experience if you did your part.