As far as I know the the steel breach for a 1377 is the same breach as for a 2240, only difference is one has a .22 cal bolt and the other a .177 bolt....same breach, just different bolts in the kits. Even though the tube diameter for the 13XX guns is 3/4" and the tube on a 22XX gun is 7/8" Crosman only makes one breach size....and it's cut to fit the 22XX guns, and fits the 13XX guns, but can be a bit wobbly. I've installed them on both with no ill effects....oh and they also make a short breach for the Custom Shop guns, but it's the same afaik...the 2250XT breach is steel too...maybe you could order it using that part number? Once I called Crosman to order a breach, they said "out of stock", then I went on their website and ordered one from their custom accessories page, and guess what...a few days later I got a breach in the mail....the shipping was more, but I was also able to order trigger shoes and other stuff you can't normally order via Crosman Customer Support...go figure. There is a MWD breach I think it's called that had a rectangle channel rather than a ball cut in the base, it will fit either with no wobble...., but I don't know where to get one, I've only handled one and that was for a gun I built for someone else...they provided the parts...that coulda been a short production thing as it also had a .25 cal barrel.
Anyways, whatever you want will eventually turn up. I think Dave still has a gun with an RJMachine breach in the classifieds for sale on here too:)
Dan
