I have a Ruger model P45GMK3RP with the factory threaded barrel. I have made the following modifications. $400. No red dot on it. Volquartsen Target Trigger, Target Sear, Scope Mount & Exact Edge Extractor $116 Sam's Hammer Bushing $10 Mag Safety removed $ priceless Sling shot mod $ priceless All original parts $ 329 @ buds Real nice shooter, looking to do something different for a suppressor host.