I turned a barrel weight which looked like a short moderator,using 2 grub screws to secure, and fitted a set of weihrauch 35 sights...rear one is dovetail fitting...front is tunnel with interchangeable elements.......I sold these (just the sights) at groby, to I believe I.J.....maybe worth giving him a P.M. to see if he used them on anything, or still has them in his spares box..My apoligies in advance to both of you if I have the wrong person in mind, I think he bought a pack of marksman pellets at the same time