Class IIIA, less than 5mW 632-650nm red dot laser. Laser bore sight is fit for 5.56 .223 Wylde chambers, caliber specific. 3 sets (9 total) batteries. Each set lasts up to an hour. Putting the batteries in the bore sighter and automatically turn on. Please remove the batteries after use. Easy to use, 223 laser bore sight make the red dot sight to zero much faster. Saved your time and ammo. Machined from reliable and durable brass casing. Sturdy, high accuracy and bright. Easy to sit perfectly in the bore. [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/1_a9652407-af80-4159-a81b-b3b24fb74561_1024x1024.png?v=1637031202] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/2_ae7e49c8-abc0-45c6-a06e-7f09dd34da3e_1024x1024.jpg?v=1637031202] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/3_fbb2c058-a918-4d1b-b15f-8b575b584e16_1024x1024.jpg?v=1637031203] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/4_5369f283-6685-400a-b19e-f5cc09e9f880_1024x1024.jpg?v=1637031203] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/5_86c639aa-0e95-44db-b7b9-7fe8321e2f40_1024x1024.jpg?v=1637031203] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/6_28cb10fb-a890-486d-8588-6e8c2aa5e995_1024x1024.png?v=1637031203] [https://cdn.shopifycdn.net/s/files/1/0599/5508/5505/products/7_2531807e-29e1-4929-affe-d9b82a7efbd6_1024x1024.png?v=1637031203] Feyachi .223 5.56mm Laser Bore Sight 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. Specification Construction: Brass Length: 44.5mm; Tail width: 9.5mm; Head width: 6.3mm Laser Wave length (nm:) 632 to 650 Power: <5 mW Sighting Range: 15 - 100 yards Dot Size: 2" at 100 yards Temperature: -10℃ to 40℃ Battery Type: 9 x AG3 (Included)