<p><b>Feyachi .223 5.56mm Laser Bore Sight</b></p> <p>The Laser boresighter will be an excellent addition to your toolbox when getting your barrel and optics aligned properly prior. Adjust and zero-in your optic or iron sights without ever firing a round. It makes the process much faster, easier, and ensures you don’t waste precious ammunition during these times.  It designed for firearms chambered in .223 Rem/5.56mm NATO. This device is placed in the chamber, and projects a visible beam on to a wall or other flat surface. </p> <p> </p> <p><b>Specification</b></p> <p>Construction: Brass</p> <p>Length: 44.5mm; Tail width: 9.5mm; Head width: 6.3mm</p> <p>Laser Wave length (nm:) 632 to 650</p> <p>Power: <5 mW</p> <p>Sighting Range: 15 - 100 yards</p> <p>Dot Size: 2" at 100 yards</p> <p>Temperature: -10℃ to 40℃</p> <p>Battery Type: 9 x AG3 (Included)</p>