Speaking of rifles, I have a Beretta CX-4 Storm carbine, that blew up the trigger group on me.
My buddy and I (He also owns a CX-4 carbine) were plinking the metal plates to see who can knock them down faster, so we were rapid firing.
I was using the German made Geco ammo, the first mag went well, but half way into the second, I got a big bang, big flash, and my hand and the magazine were pushed down violently.(scared the shit out of me, because I wasn't expecting that)
After removing some small plastic pieces from my hand, I checked the damage, and saw the complete trigger assembly was blown off (I should note that all the internals in this carbine are made out of plastic) also the plastic recoil rod was broken. Upon checking of the spent shell, it showed it was fired out of battery. (later on, I found out several people had the same problem with this carbine)
Called Beretta, and they said they will charge me $100 just to check it, and see if they will fix it, if not, I had to send them $45 to ship it back to me, (all of this with a gun that was still under the 1 year warranty).
Then somebody suggested to look into a Sierra-Papa, a company that makes a beautiful billet aluminum trigger group, specifically for the Storm.
Well, the part was awesome, BUT, if you choose that trigger group, you HAVE to use their hammer, and if you use their hammer you HAVE to use their spring kit, and if you pay by credit card a 3% increase will be added to your final price.
So, at the end, getting the replacement parts from Sierra-Papa will cost more, than buying a brand new Ruger PC Carbine !!!(which in my opinion, is far superior than the CX-4).
Anyway, the carbine is sitting inside its hard case, frame, barrel, bolt, magazines, everything is in great shape, and with less than a year of use.
If somebody wants to play with it, make me an offer.