Laser Boresighter for Centrefire Rifles Chambered in .223 or 5.56x45 Nato To Aid Scope Zeroing With Less Wasted Ammo.

Tested and recommended by the National Tactical Officers Association, the Sightmark .223 Boresight significantly reduces wasted cartridges and shells. Chamber the device in your .223 rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions.

Laser Wavelength     632 - 650 nm
LED Type     Visible red laser
Output Power     <5 mW
Battery Type     AG5 2
Battery Type     AG3 3
Battery Life     1 hour
Range for Sighting     15 - 100 yds
Dot Size     2 in @100yd
Operation     on/off end cap
Material     Brass
Operating Temp,F/C     14 to 122 / -10 to 50 F/C