Someone came to my office asking me to try one out and we slammed down a clip behind the office. I think it was Bistich, but it may have been rigid. I forget. Who knows, it was an orange gun and I think Bostich is yellow. It was a prototype.
I told them it wasn't fast enough for production but would be great for repairs. They were supposed to send me one to play with but never did, this was 3 years ago.