P&L Development .275" Target Scope Bases 1-Piece Universal Rifles 1018 Steel, Matte Black Versatile, steel bases accept target front sights and external adjustment scopes from Redfield, Lyman, Unertl and others that require a 3/8' dovetail base. Contoured bottom radius provides a tight, solid fit to barrel, prevents side movement, and ensures base is aligned squarely with receiver. Does not fit Redfield external adjustment scopes. Specifications: - Style: Target Scope Base - Make Model Fit: Universal Rifle - Mount Type: Direct - Number Of Bases: 1-Piece - Ring Height: 0.275 - Item Height (Inches): 0.275 - Material: 1018 Steel - Measurements: 1-15/16' (3.5cm) long and 9/16' bottom radius - Hole spacings: .860' and .562' - Finish: Matte - Color: Black / Blue - Includes: 6-48 screws