Please do not hesitate to ask questions i answer fast and honestly. I have a couple new holosuns 221g’s for your consideration. Brand new in factory packaging and come with a brand new extra Duracell cr123 battery too. The Holosun Coaxial Green Laser / IR Illuminator Laser is designed for rifles and features a green laser reticle. It includes a QD mount, CNC machined housing, and a remote cable switch for convenient operation. The laser sight is made of durable 7075-T6 aluminum and is compatible with CR123A batteries, offering 8 hours of battery life. With a compact size of 3.4 inches in length, 1.5 inches in height, and 1.9 inches in width, this laser is suitable for shooting activities and mounting on rails for precision targeting. Thanks for your time.