Thanks, Mantzao and Peroni,
My 0550 is a super-knife. The craftsmanship is evident and I'm very pleased. It is aboug 8 1/16" long when opened and blade-length is ~ 3 9/16" long. It's a tremendously solid knife. Smooth opening and closing; no blade-lock of any kind. Lock-bar easy to move over for unlocking. Nice four-way pocket clip. It's a knife I'll carry very often in Levis, although probably would not carry if office-wear as is a bit heavy for that. However, you could use it to pry hinge-pins out of doors in case you forgot your office keys...
I like it. I expect to keep it. Longer and not as blocky as my BenchMade 755 MPR. Very high quality product, with Hindered design.
As Mantzao said, would enjoy seeing this knife in shrink-wrap, with 3" blade and lightened considereably. Of course, then it's be an XM-18.
Sonny