On these 3, the stock nose cap holds the front of the handguard, which is screwed into a stock insert. The rear of the handguard is retained by a very tight circular spring clip around the barrel. Removing the handguard is very difficult, and alot of them got broken by over zealous people cleaning and stock refinishers. Finding a replacement is near impossible and can be very pricey if found. And also, the triple ring is roughly the same as the Cetme, with a slight amount of fitting it will fit, and the barrel follows the same design also, the biggest difference is it's threaded for one of the two Mauser actions.
So sorry you had bad experience with one.
Sounds more like bubba got ahold of it, in my opinion.