anything is possible, parts that take a pounding , round after round, metal gets "work hardened" often becomes brittle and can fracture,,,,,proper heat treat is paramont......................the Ruger pins have broken also, same place from time to time, starting back in 1949-50...............
I had taslked with the folks at Majestic many years ago when they first came out with this set-up , saw them "someplace" at a major gun event,NSGA< Shot Show, not sure it was way back when we were "in business" and I and our gunsmiths had tested this, worked out pretty good, made things simple and easy, BUT back then we "wondered" about this very thing, now having two joined parts instead of just the one ,solid pin of Rugers....was two schools of thought, and they did work...many people have said " a fix for a non problem" as we never had issues or trouble taking the Ruger 22 semi autos "apart" but then again we have done it thousands and thousands of times MORE than the average Ruger owner or user..............
call them , they will stand behind it...............
PS please note that this happens MORE often when one uses ANY "hyper velocity " ammo, I don't care what folks say "works for them, they use it all the time"...given time, and you pound metal hard and long enough you can turn your plowshares into swords......... 8) :roll: :wink: