Firefield .264 Win & 7mm Rem Mag In-Chamber Red Laser Brass Boresight

Boresight your firearm quickly and easily using the FireField .264 Win & 7mm Rem Mag In-Chamber Red Laser Boresight. This brass boresight loads directly into the chamber of your firearm and produces a 2-MOA red laser dot at the theoretical point of impact. It can be powered by two AG5 or three AG3 batteries for one hour of continuous operation and has an On/Off switch on the end cap.