Not sure if this is what you're looking for, but I have a little Ridge Runner that I bought in the checkout line as an afterthought at Bass Pro Shops or Cabelas. (This was during my hard core kayak fishing days). I think it was just a few dollars. It's 3" folded and 5-1/2" open with a good tough plastic body, a solid and well functioning lock mechanism, and a ~2" stainless blade that is half straight edge, half serrated with a good edge. Good grip for a small knife. Weight = 22 grams. I have used this thing constantly in the field, at home, in the yard..., and I hate to admit it, but it has gotten a lot of abuse and I haven't really taken good care of it - but you can't tell. It's been pretty bomb proof.
It's stamped "Made in China" if that bothers you (it bothers me more now than it used to), but if it doesn't, it's a great little knife.
Edit to add: Easily fits in an Evernew 0.9L, so it'll fit in yours...