For the custom painted raygun glock im making, I decided to use the ruger rxm platform mainly because i own it and i can use the same guts in a new slide and frame to save where i can. I went with Magpul's full size frame over the shorts bros metal one because I cant afford the extra $300 at least for now with all the money im putting into the gun already, so now im working on what slide ill use. I want one that is tried and true and has vertical back serrations. I dont know if its better to have no from serrations or to have them because ill be painting over them but I also need to cock the gun so idk. Honestly, im still new to guns so I dont know how to effectively shop around and pick the best deals or parts so any advice is much appreciated.