You should make a front sight made for cutting down M91/30 barrels, that would be pretty nice. I've wanted to take an M91/30 down to 16"-18" or so (yes, very short for such a punchy round, but screw it) but the idea of using an ATI front sight replacement is unappealing. I'm sure more people than just me wouldn't mind taking an old beater Mosin and cutting it down to make a handy carbine, especially now that M38s and M44s are impossible to find online now.