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SM-1 autotrigger kits

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This Auto Trigger Kit will fit all SM-1 Pump Guns/Markers. There are two version early version and currant version. The early model guns/markers from SM-1 came with a trigger that is not compatible with any Auto trigger kit. So the trigger must be replaced. To find out if you have an Early version or a Current version you must pull the trigger out of the frame. If the trigger does not have two adjustment screws then you have an Early Version and The trigger needs to be replaced with the Revised trigger