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You can take the pic from the spec sheet (Here's the one with the factory laser: Ruger® SR22® Rimfire Pistol Model 3615 ) and do some measurements before ordering to make sure the holster has room.

My definitions are ergonomic, rather than by measurement. If you need a magazine extension for your pinky finger to fit the grip, you have a subcompact. If the pinky fits but you can pull the...