Sightmark SM39001 Boresight Red Laser for 223 Rem/5.56x45mm NATO Brass Includes Battery Pack & Carrying Case

The Sightmark SM39001 Boresight: Precision Zeroing for .223 Rem / 5.56x45mm NATO Firearms For anyone serious about achieving optimal accuracy with their .223 Remington or 5.56x45mm NATO firearms, the challenge of precisely zeroing an optic or iron sights can be both time-consuming and expensive. Wa