If you have this knife you will notice the back of the knife while it is in the closed position where it would meet for lockup with the linerlock and the stop pin in the back, the BG42 is cut very sharp and jaggered that it is chewing up the stop-pin in the back. Is this because the first 500 are processed at a quicker speed with a sacrifice for quality. Eventully the titanium pin will deteriorate and the lockup will not be as secure. (I also have the large tanto in ATS34 and that part is polished and finished smooth as glass.)