Gun laser bore sight,boresight,bore sight by econoLED all in One .22 to .50 Caliber Rifle Gauge Boresight Red Dot Laser Boresighter New Allows for quick and accurate resetting of any sights, Simply choose the caliber adapter and place the laser unit in the muzzle. Caution: Avoid direct eye exposure to beam; Fits any .22 to .50 caliber rifles, handguns, and scopes. Max. Output Power less than 5mW; Weight 38g; Material Aluminum; Length 155 mm; Length of rod that fits in the barrel: 60mm - 90mm (tapered). Windage and elevation adjustable; Long sighting range; Light weight and durable; Tools, four adapters, and extra batteries (three in total) all included. Great Quality(Our laser pass strict quality inspection standards), Affordable Price. Head Diameter: 16mm; Tail Diameter: 5mm; Laser wavelength 635-655nm; Laser Color Red; Power 3x AG13 batteries. The Boresight is shipped form US.The shipping time may take 3-6 working days.12 Month Warranty and Easy to Get Support.