If you're looking for parts stay away from Kirban/Castle performance. Just FYI. Kirban used to be the go to guy but he sold out to Castle and it went all to hell fast!
Like I said if you need any help/advise let me know.
That a TandemKross ring or a Ruger ring? I want to put one on mine but I'm sure soon as I start shopping on TandemKross I'll have everything they make for a MKIV. I'm still waiting for my form 4s to come back so I can put the Warlock suppressor on it. Filed damn near a year ago. :crybaby: