Same peep i use and its great. I cant shoot worth a darn with buckhorns at just 65 yards but i can keep within 2.5" all day with a Williams FoolProof on a rest.

It just doesn't click, it also has set screws to keep it from moving after site in. Numrich has the ones for round top Knight plunger guns for $40 roughly in either blued or silver. They are old Knight stock IIRC and Williams has different apertures if you want one. They are about half of MSRP with shipping.

http://www.gunpartscorp.com/catalog/...140&catid=3013


http://www.gunpartscorp.com/catalog/...130&catid=3013


WARNING THEY DONT FIT DISCs, its wrong. I tried and the blister pack doesn't list the DISC either.

BTW that reminds me...that place that had some Extremes in 52cal for $239??? They have a LRH too i think but i don't remember how much. I think it was in the $550 range for the LRH non TH. They have some MK85 Predators 54cal NIB but they are pricey at $400.