Chamber the Sightmark boresight in your .17HMR rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Ideal for hunters, competitive shooters and law enforcement, this device significantly reduces wasted cartridges and shells. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, two AAA batteries, and instructions.
Specifications:

Type	Laser Boresighter
Caliber	17 Hornady Magnum Rimfire (HMR)
Style	Cartridge
Material	Brass
Quantity	1
Battery	External Battery Box
Mount	Chamber