Rexime RPA mods

Lightened parts and rear sights for the Reximex RPA or MITO, in the target shooting pistol version.
Parts are printed in PLA with 100% infill and supports (all possible). The barrel cover does NOT have a thread for the moderator.

All this makes the rear sight better, I used those from an old disused Diana rifle. The front sight was taken from a project found here on thingverse and modified with the addition of the LPA.