AimShot BS204 Ruger 204 laser bore sight module. Designed to make it quick and easy to bore sight your rifle chambered in 204 ruger. This is an actual laser bore sight, no additional parts or inserts are needed. Insert brass laser module into chamber and align scope reticle to match laser beam at 20 yards. Remove laser and proceed to the range for final adjustments at whatever distance you want your zero. 2 sets of batteries are included with the sale. 
 
Our boresights are made with a solid and durable construction that we guarantee is zeroed in and requires no adjustment. They run on button cell batteries for all closed chamber operations but can also be retro fitted with a battery pack to increase battery life from 10 minutes to over 20 hours (MBP223 is the external modular battery pack for the BS204). Made from a solid brass housing and utilizing a 640nM wavelength throughout the line; our bore sights are exactly what you need to be ready.
 
<5mW FDA Class IIIa laser