Safety marker (ECI) for Ruger GP100 and S&W 686 (.357)

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Safety marker (or Empty Chamber Indicator) that fits the Ruger GP100 and the Smith & Wesson 686 revolvers with caliber .357 Magnum. This remix has the following changes from the original design: - Smaller/lower chamber plugs - Slightly smaller/lower outside marker Available in two versions, one for Ruger and one for S&W (and clones). The only difference is the Ruger logo on the outside marker area. When printing, make sure you define solid layers to at least six in the bottom, so that the first one or two layers of the chamber plugs attaches nicely to the bottom plate (which is 1 mm thick). If you don't, the plugs easily breaks off in my experience.