What do you think the value is of an SWD m11/9 that has been covered to use a STEN magwell and has had the slow fire TASK conversion done (including the hole in the backplate)? This would be a local non-dealer transaction for a gun that is in fair/good condition. It seems to me that the STEN magwell and TASK conversion reduce the value of the gun but I am not sure by how much.