Hi-Lux Optics Malcolm 10x Booster Eyepiece for Parallax Adjustable Gen 2 Long Rifle Telescope Brass. It is not compatible with previous generation models of the Malcolm 6X long scope or any of the Malcolm short rifle telescopes. Specifications for Hi-Lux Optics Malcolm 10x Booster Eyepiece for Parallax Adjustable Gen 2 Long Rifle Telescope: Manufacturer: Hi-Lux Optics Color: Brass Size: Small Magnification: 10 x Package Contents: Hi-Lux Optics Malcolm 10x Booster Eyepiece for Parallax Adjustable Gen 2 Long Rifle Telescope Hi-Lux Optics MB10LB: Malcolm 10x Booster Eyepiece for Parallax Adjustable Gen 2 Long Rifle Telescope Brass