For some reason the 2240 breech dosen't have the screw but the 1377 breech does... I have not seen a 1322 breech as you simply use the 2240. (ONLY the probe is different between .177&.22)I made all new screws for mine as I really dislike the &^^& Crosman uses. I use Allen head cap bolts. and cut to proper length with a dremil tool.CW