The Griffin Checkmate uses a unique monocore baffle design that provides all the benefits of both monocore and K-Baffle designs, without the downsides: A true K-Baffle suppressor is extremely quiet, with a minimal First Round Pop; but, tends to be more difficult to take apart and clean. The Checkmate solves the maintenance problem by using an monocore baffle design and includes a pusher tool to remove the core from the outer tube if it gets "stuborn." This allows the Checkmate to perform like a K-Baffle suppressor without the maintenance hassles. We've shot the Checkmate quite a bit and it's definitely one of the quietest suppressors on the market! The Checkmate's baffle core is 17-4 stainless and reinforced by the outer tube. As a result, it's one of the toughest suppressors out there - and is fully capable of handling calibers like .22 Mag and .17 HMR. Are you looking for a direct thread suppressor, or a quick-attach? With the Checkmate, you essentially get both! A simple conversion kit is available that will allow you to convert your Checkmate QD into a direct thread mount.