Best K'nex gun ratchet system?

I want to use a ratchet system(like the one on the sipriani rifle) for a new idea that i thought of, but before i start i want to make sure I'm using a good ratchet system. I haven't looked at many ratchet systems so specific names of good ones (or ones that are generally accepted as good) would be helpful.

Not to be forthcoming, but try the one from my 'Shadow sniper rifle'
DJ Radio7 years ago
The SRv2 doesn't have a ratchet.  The most famous one is the Sipirani ratchet, but I like the one on MrRadicalEd's RBG a lot since it features a safety.