I just talked to Crosman to order the correct breech. The part number of the steel breech from the 2240SBPK kit is AS2250-A013. With shipping the cost is about $30. Heres hoping it has the breech screw at the front of the breech to match my pistol.
I think it would be great if somebody made a basic, anodized black, aluminum 13xx platform breech with Picatinny rail instead of dovetail. Eliminate the need for adapters, firm up your barrel mount and expand your options for a sighting solution. Crosman could make them from steel and probably sell quite a number.
There is the dovetail for 3/8 11mm ring mounts.
I have an old 1377 sliding breach (plastic) would like to get a long steel breach for it don't need bolt as I am using old brass boltand a barrel from a .25 cal springer to build a long stroke pumper that I saw on another thread what is the difference between the new style breach and the old is it just the hammer pin or is it the screw location in the breach and would any one have the part #mine is a phase 2 made dec. 95 whith breach screw in the loading gate any help would be greatly appreciated