Here's a new pickup, and my first one-hand opening RR, the RR1129 Linerlock Trapper. Been wanting to try the Case Trapperlock, but the cheapest I've seen used examples is $40, and a new one is close to a hundred bucks. The Rough Rider, shipped from a Blue Ridge associated dealer was $15. SMKW does have it listed as "OUT OF STOCK" and probably discontinued. RR is worse than GEC for short, sprint-runs. At least they don't cost as much! The spelling on the box, tang, and shield is "RYDER" meaning it is not that old of a release. There was also one in smooth bone with the Remington-like acorn shield.
This knife has no backspring. It may look like there's one, but it's basically just a spacer.
Here's my problems with it.
The handle material needs to be G-10 or Delrin, but not bone. The handle at the linerlock is unreinforced, and being bone, may crack or even break completely off if dropped. For a work knife, it's also gripper, and thus better.
And, this is both good and bad. The blade tang has a detent cut into it so that the linerlock will catch the blade at half-open when closing, but not opening. I guess as a safety measure to keep the blade from closing on a finger when shutting it, and to keep it from opening up on its own if dropped. It's also somewhat annoying when opening it. At first, I thought my knife was defective, but looking closer, it's intentional.