Get unmatched accuracy straight from your chamber with Sight-Rite Bullet Cartridge Laser Sights. Available in a range of gauges and calibers, these machined brass casings are durable and factory-aligned to specific ammo sizes for accuracy. Regardless of size, the same high performance laser allows you to acquire targets easily. SSI® Sight-Rite Chamber Cartridge Laser Bore Sights also include 3 LR41 lithium batteries to keep your laser bright. ** Learn more about THE PROS Gun Services available at all DICK's Sporting Goods locations ** FEATURES: Bullet laser bore sight High output laser promotes quick target acquisition Durable, machined brass casing maximizes accuracy Factory-aligned based on caliber 3 LR41 lithium batteries included