[Rob72]

If I'm thinking of the same knife, its a double edge, fairly wide, with a unique press-to-release bar, on one of the edge-sides of the handle, only about a 4" blade, right? $25 was not bad at all, considering they ran about $50-60, when they came out, IIRC.
My only complaint was that the tip was fairly fragile (I bent mine, when it dropped, point-first, into/onto a lineoleum floor.)

For a back-up, or moderate to light use field knife, I'd feel comfortable with it. I just prefer something harder and more resilient than 400 ss, anymore.

Edit: Or is the Tac II almost a modified Mk II? If so, I think they made a change in steel,......got pics?

 

[EX CATM]

The blade is actually similar to a MKII but it does have the release on the sheath, it is actually a spring retention thing that goes thriugh a hole in the finger gaurd. The vlade is 6" long double edged with a fine serration about half way down both sides.

 

[Rob72]

Gotch'a. I wish I could remember the name of the model I was thinking of..... Anyhow, Gerber got away from the tool steels, with their 80's and beyond production (mostly "400 series" ss), so I wouldn't call it a hard-use knife, but, again, definitely serviceable. Good find!