No need to drill and tap a rock-hard Springfield with this No-Drill, No-Tap Mount. No need to bend the bolt, a simple grinding of the bolt handle for clearance is all that's needed. Blends in well with original finish. Will not fit the 1903/1903 Mark I. Mfg: S&K SPECS: Alum., black, anodized. Uses standard Weaver-style 1" (2.5cm) rings, not supplied. Wt. 3 oz. (85 g). 5-5/16" (13.5cm) long.