?Description:      7MM Brass Laser Bore Sight Cartridge Red Laser Boresighter Hunting    <br> This 7mm CAL Cartridge red Laser Bore Sighter features precision accuracy. This bore sighter is a fast｣ｬ reliable and durable gun zeroing and sighting system.<br>  Features:  <br> Precision accuracy.<br> Reliable and durable.<br> Fastest gun zeroing and sighting system.<br> Reduce wasted cartridges and shells.<br> Compact and lightweight.<br> Easy to pack and travel.  <br> Laser wavelength (nm): 635-655nm<br> LED type: Visible red laser<br> Power: Less than 5mW<br> Off axis angle: 0.1mrad (high precision)<br> Battery type: L936<br> Operation: On\/off end cap<br> Construction: Brass<br> Temperature: 10-50\u2103<br>  <br> Package includes:  <br> 1 x Laser Boresighter<br> 3 x Batteries<br> 1 x User Manual  Details pictures: