I am not sure what you are asking. The Marbles TANG sight would need a "tang" to attach to. This COULD work on the carbine stock but not on the handgun contender stock. There IS a product called "One Ragged Hole" sight that is made for Revolvers. It seems to work well enough for targets, but leaves much room for improvement in the hunting field. There is another sight that fits on a Weaver style base. I believe this one is made for a rifle and might be too small for use on a handgun. It's made by NECG (new england custom guns) If you find a suitable aperature sight for the contender please let me know about it.