Mosin Nagant 91/30 Front Fiber Optic Sights

 

These are 3D printed sights printed with PETG filament which is stronger than the normal PLA that's widely used. When shooting at 50 yards I was hotting about 7" high with the rear sight set at it's lowest point. I started testing various heights and found that the .504" sight brought it down to the bullseye. Moving out to 100 yards I had to use a .584" height site and at 200 yards, went back to the .504" sight. This all was tested using a .311" 150gr FMJ BT Bullet.  All testing was done with the rear sight at it's lowest setting.

Note 1: Although these are pretty strong, a slight blow or pressure could break them. They handle the recoil just fine though. I would suggest using a hard gun case instead of a cloth rifle bag. I did break one of the OEM(Ring) sights using a soft case. 

Note 2: I also suggest using a sight pusher tool and pushing on the lowest part of the dovetail, do not push on the upper part of the sight.