There has been reports of a
very few GSG barrel bushings breaking off at the legs thereby allowing the recoil spring plug to come off the guiderod. The issue has been attributed to a "non steel" barrel bushing that can break over time. [However, that said, I have seen steel barrel bushings fail on 1911's in .45ACP as well resulting in the recoil spring plug going down range].
The fix for the GSG seems to be the installation of a steel barrel bushing which then negates the failure issue. I am told that the new lot of GSG's coming out of Germany will have steel barrel bushings. I put a magnet on mine & when it didn't grab
replaced it with a steel Colt bushing and put the stock one in the bag with the spare front sites. Like I said above, my GSG 1911 .22lr runs like a champ.
NAA.