This was not an operating problem. The guy this was issued to somehow let it get tangled in part of a tank turrent gear.
NOT THE 11'S!!!!!!!!!!! AWE MAN!!!!!!
On this note, last month I was shooting an IDPA match and my friend, who shoots an STI, had his STI blow up in his hands. He reloads and he thinks he double charged that round. It blew the mag out and the grip pannels apart and seized up his barrell. He was very very lucky only minor cuts and powder burns on his hands as well as powder burns and small frags of lead in his check. Just goes to show, you do anything long enough and shit is going to happen. Also shows why eye protection is important.
Some years back, a guy I knew blew up an S&W Model 19 .357. He was loading some ammo with Bullseye powder, & somehow he used the same weight charge that he would normally use with Unique. It only took one round to totally demolish the gun. Tore his shooting hand up pretty good too, and split one finger on his off hand. He wasn't the nicest guy in town, so he didn't really get any sympathy from anyone. If he'd have used the same charge that he would have used with H110 or 2400, it would probably have taken his hand apart completely.