It wasn't a gun but I bought a .22 conversion kit direct from Beretta for my model 92. The day I took it to the range I had so many malfunctions with it regardless of the ammo brand, I almost threw it in the trash can at the range. I decided to sent that pos back to Beretta and got a refund.
I did something similar. I bought a .22 AR conversion kit. Seemed like a good idea based on the price of .22 ammo versus .223 ammo. Used it once, did not function worth a darn, up for sale the next day.