<p><b>Features</b></p><ul> <li>Adjust and zero-in your optic or iron sights without ever firing a round.</li> <li>High accuracy to reduce cartridges and shells wasted.</li> <li>Sturdy brass construction. Easy to sit perfectly in the bore. </li></ul><p><br></p><p></p><p><b>Specification</b></p><ul> <li>Construction: Brass</li> <li>Length: 44.5mm; Tail width: 9.5mm; Head width: 6.3mm</li> <li>Laser Wave length (nm:) 632 to 650</li> <li>Power: <5 mW</li> <li>Sighting Range: 15 - 100 yards</li> <li>Dot Size: 2" at 100 yards</li> <li>Temperature: -10℃ to 40℃</li> <li>Battery Type:9 x AG3 (Included)</li></ul>