Im curious on how many would actually buy a longslide kit for there 4"? I would in a heartbeat. Not really interested in buying the whole gun. The slide kit would be great. Also black or stainless? Im wondering if we could get a group buy on them. Hk has done special group buys for Hkpro. Plus just the slide kit would be a lot easier. Fnh already put the idea out right? We just give them reason to do it.