Accuracy has never before been so easily attained than with the Firefield series of in-chamber red laser brass boresights. The Firefield brass boresights deliver precision accuracy without wasting time and ammo at the range. Once placed in the chamber of a firearm, the red laser dot appears exactly where the barrel is pointed, allowing the weapon sight to be adjusted to the theoretical impact point. Durable brass construction means you’ll be able to reliably use this boresight for years. Easy to pack and travel with, the Firefield brass boresights feature a compact, lightweight design that allows you to carry it wherever you go, from the range to the field. Features Precision accuracy Reliable and durable Brass construction Compact and lightweight Easy to pack and travel Specifications Laser Wavelength, nm 632-650 Output Power, mW 5 Battery Type 2x AG5 or 3x AG3 Battery life hours 1 Range For Sighting, yd 15-100 Dot Size, in. 100yds 2 Operation On/off end cap Construction Brass Operating Temperature 15 to 120F SOLD QUANTITY 1