This new part, pictured below the FRN Slipit, is part of Spyderco’s constant quality improvement or CQI. The blade on the FRN models closed to easily for many customers so the Spydercrew looked at it and decided that the backspring needed some improvement. This ‘forked’ spring offers just the right kind of resistance.
You don’t have to worry about dirt getting in there; the fork only opens when the folder is opened, when the blade is closed the fork compresses so nothing can get stuck in there. To give you an impression of the effectiveness of this new spring; when I tried to one-hand close this knife, I dropped it. I didn’t expect this resistance on an FRN slipit. I just hope I can backorder a handful of these springs to upgrade my collection of FRN slipits.