I know a "new" bolt doesn't work in an older valve. Different diameters. Tried it year or two back, in a M/M.
I would say yes. Especially if it has an o-ring. It wouldn't necessarily need to have a magnet, but, extending the probe 1/16, or so, would be a big plus.
Ron, will this bolt work on a 880 with a clamp-on barrel.Take care Bernie.P.S. Your upgrade kit for the "old style" 880 is working great. Thanks.
Interested. Don’t know that I will ever shoot BBs in an old metal 880, though.