In reading about red dot mounts (mounting plates), I've discovered that there are CNC machined aluminum mounts and 3D printed plastic mounts. The argument I recall for aluminum was thermo-something-or-other effects on the plastic which can lead to inconstancies in your POI because the optic will move slightly. I'll have to find the page I read this and link it in this thread at a later time. On an air pistol or airgun carbine, how big of a shift are we talking? For those of you using reflex sights, which do you prefer, plastic or metal to mount your reflex sight optics?
