Fits X model 45/70 variants - Not compatible with Dovetail front sights Screw-in front sight compatible Does not work with 30-30 models - Not compatible with octagon barrels or brass receivers. Heavy-duty ghost ring for fast target acquisition Features 4" Picatinny rail section OR T1/T2 red dot pattern interface by sku designation Wide windage and elevation adjustment range for use with different ammunition Midwest Industries sight adjustment tool included Constructed from Hardcoat Anodized 6061 Aluminum Steel rear aperture and front sight post Made in the USA MI Lifetime Warranty Patent Pending Mfg: Midwest Industries