The Trijicon RMR standard has two holes for screws and two sockets for the pins on the mount/adapter that are positioned in the front, in both corners. Regardless of the fact that the sockets are just in the front, the footprint is slightly similar to the Docter/Noblex one. It is important to point out that the sockets in the corners are considerably more separate on the Trijicon footprint and larger in diameter. There are several different footprints that are being sold. One instance is Sig Sauer’s Romeo 1, which has a footprint fitting for mounting on some Sig Sauer pistols. But to mount it somewhere else, a special adapter is needed. Steiner has another method for their MRS, with just two narrow notches in the front, while the holes for the screws are positioned at the rear of the sight, on the left, as well as on the right side.
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