Working closely with some American makers, SIG was smart enough to get Matt McLearn, top IPSC champion and custom pistolsmith, to bring experience to the project. McLearn was the driving force behind SIG's new 1911.
And his influence brought some interesting innovations. For example, McLearn immediately decided to lose the full-length guide rail common on all too many 1911 pistols today. He also decided to dispense with the just as common forward cocking serrations found on most contemporary 1911s. An aside here, I actually like the forward serrations, since they allow a shooter a solid purchase during press-checks, but the GSR is certainly no less a pistol for being without them.
When I was first teased with the idea of a possible 1911 from SIG, I was told-in the deepest secret, double-dare, finger-in-your-eye confidentiality mode-that the "slide would be very SIGish, if you get my drift?" I wondered what that meant at the time but, once I saw the final result, the drift was obvious. A clear-thinking machinist took a cut out of the slide on both sides that sort of mirrors the look of the P-series autos. And yes, it looks very SIGish. If you ask me, it's a handsome touch, and it lends a nice family resemblance to the GSR. Well done.
Other design features include the GSR's integral light rail, the "R" in GSR. The rail is compact and it looks as if it grew organically out of the gun's overall design, which it did. At 39 ounces, the GSR is a bit lighter than a comparable 1911 with a rail, and still legal for International Defensive Pistol Association competition, if you're so inclined.
Quality In, Quality Out