Innomount quick detachable scope mount for Sauer 303 - Schmidt & Bender Convex Rail This Innogun quick detachable scope mount is specially designed for the Sauer 303 with ISI mount. The ISI-Mount was used at the beginning of the production of the Sauer 303. The current Sauer 303 self-loading rifles have the newer Sauer SUM mount for the Sauer 404, so depending on how old your Sauer 303 self-loading rifle is, you need the "Sauer 303 mount" (or ISI mount) or the "Sauer 404 mount" (or SUM mount). The Schmidt & Bender Convex rail is attached with 4 screws. Easy to install yourself The Innomount mount is a first-class mounting for your Sauer 303 self-loading rifle. Due to a variety of different designs, you have almost every possible combination of your weapon & a desired target optic at your disposal.   Details: Clamping lever with safety device against unintentional opening high accuracy made of steel suitable for Sauer 303 with ISI-Mount suitable for Schmidt & Bender Convex Rail height: 9 mm Type number: 50-SB-09-00-600