Build the ultimate lever gun for any adventure with the addition of the XS Sights Ghost Ring sights to your Henry Big Boy Carbine, Big Boy X Carbine or .45-70 rifle. The XS Ghost Ring sights are precision machined steel and are fully adjustable for windage and elevation. Featuring a large ghost ring aperture and white stripe front sight, they are visible on any target in a wide array of lighting conditions. Ghost ring sights will ONLY work with the XS Lever Rail for Henry - Rear sight CANNOT be direct mounted to the gun Ghost ring sights offer an enhanced field of view in field conditions Comes with both a .230" ID and .191" ID aperture to fine tune to your shooting environment Easy do-it-yourself (DIY) installation Precision CNC machined Available for Henry Big Boy and Big Boy X carbines (all calibers) and .45-70 rifles with round barrels Made in America for an American made rifle