Bushnell Magnetic Boresighter Rifle Scope Accessory. Revolutionary design eliminates the need for arbors. Magnetically attaches to the muzzle to facilitate a quick sighting in. Etched glass reticle. Specifications for Bushnell Magnetic Boresighter Rifle Scope Accessory: Manufacturer: Bushnell Fabric/Material: Metal Condition: New Features of Bushnell Magnetic Boresighter Rifle Scope Accessory 740001C: optical boresighter designed for quick easy sight in etched glass reticle magnetically attaches to muzzle of any firearm eliminates need for arbors or spuds for use on all calibers and firearms Package Contents: Bushnell Magnetic Boresighter Rifle Scope Accessory 740001C Bushnell Magnetic Boresighter Rifle Scope Accessory 740001C