I installed a set of Ameriglo Fibre Optic sights on my 31C and wanted to see how it was sighted in. Ammunition was Federal 125 grain FMJ—under the covered firing point it was loud! Muzzle flip is certainly minimized, although there is a definite "punch" to the recoil. I was curious if the front sight would get sooted up from shooting but the sight was still completely clean at the end of shooting.