To be honest, I have not been able to do much with the gun. I did find the original nipple turns and is not rusted to it, I only went one turn and left it a lone until I have time for it. The lock was gunky, like old cosmoline inside, all I did so far was use WD-40, an old tooth brush and a can of air I had to clean up the inside pretty good. Then oiled it with an old shaving brush I use. The lock works great so I don't want to mess with any screws, no need to take it apart. Depending on what the channel under the nipple looks like, it appears it only needs a new nipple and should be shootable, for shot anyway. I see soon. :thumbsup: