Did you get the buffalo? I had to have a mainspring made for a Lancaster dielock shotgun and the spring was 275.00. Keep in mind this thing was about 2.5 inches long and I thought the price was outrageous.

You can always, and I repeat always get the hinge pin out if you really need to. Some are cast into the action but they also can be removed and replaced with a removable type if necesary. You must have access to an edm machine but it can be done.

Having the correct spring for each gun/rifle that I own would be very difficult to say the least. Finding them here is one problem that always is a pain in the ass. There are also certain little tools that are very important as well. I am talking about very small spring compressors that will keep the spring under tension while it is slipped into place. These have to be made and there are several variations.