The Spark is a minimalist, foldover style holster that attaches with two snap loops. The loops are made from Biothane Super-Flex webbing and are assembled in-house with genuine Pull-the-Dot snaps. The Concealment Wedge on the back of the holster both tips the muzzle out away from body and rotates the grip in toward the user's hip, improving concealment. The Spark has adjustable retention which can be fine tuned by the pair of screws next to the light-channel.All their Light-Bearing AIWB/IWB holsters now come standard with the ModWing L concealment wing.All Spark holsters are optics ready, and fit common optics from Trijicon, Aimpoint, Holosun, Leupold, Sig Sauer, Vortex, and Swampfox.