Crosman 2240 2250 1322 1377 2289 Quick Release Shoulder Stock Spring & Bushing
Obviously, these are replacement parts for the OEM setup as found on the 2289.
Note that in personal testing, without the grip screws in place, the shoulder stock does scoot around a bit.
I've found that often even WITH grip screws the shoulder stock still rotates.
Shimming the gap between the frame and the shoulder stock with tape helps keep things tight.
This listing is for the spring and bushing ONLY.