Make precision shooting a breeze with the NcSTAR Tlzset Cartridge Red Laser Bore Sighter Set. This kit includes 4 red laser cartridges for .223, .308, .30-06, and 7mm calibers, ensuring accurate bore sighting for up to 20 different calibers. Easy to use, simply insert the batteries into the laser cartridges and attach them to your firearm for instant laser precision. Comprehensive kit with 4 laser cartridges Compatible with .223, .308, .30-06, and 7mm Constructed from robust aluminum and brass Includes a soft carry case for portability Comes with 12 batteries for convenience Achieve unparalleled shooting precision and enhance your shooting experience with this top-of-the-line bore sighter set.