OS57X28FNBS

5.7X28 FN BS

Osprey Global

Get your optic or sights aligned with your rifle barrel quickly and easily with this 5.7x28 FN Boresight from Osprey Global. Made of durable brass, the boresight emits a red laser which shows as a 1.5" dot at 100 yards. You can align anywhere between 10 and 80 yards, and then you'll be ready to zero the weapon with live ammo. The boresight runs on three LR626H batteries.