Worst handgun I ever owned was an early Kahr P40. FTF, FTE, FTRB, mags dropping out under fire. Luckily it was the shortest ownership too. I had a 3 day inspection period and was lucky enough to get a refund on that piece of crap. i have had two Kahr 9's that are perfectly reliable and excellent pistols all around. Worst long gun was my Charles Daley semi-auto shotgun. that shotgun simply refused to cycle anything but the expensive high velocity shells. It had too much spring, and I think the expansion chamber was out of round and did not get enough push on the piston. Its now a $400 paperweight. one of the reasons I bought was the lifetime warranty They went out of business about two months after I bought it.