Tuning Anyone tune/mod a Gunnar?

I'm just wondering if the internals and regulator are similar to other Kral / Reximex rifles? I'd like to open the ports and bump up the FPE.

I have not had hands on the Gunnar, but I have the Kratos and Akela, and a Kral Puncher Pro 500. I can tell you that despite appearances, once disassembled, it appears that no major components are compatible between them. The block (or drop block) are different, threads differ, etc.

I do believe that Kral makes the Craftsman series, but I do not think that Crosman specced any Kral components. Virtually every part is similar, but lighter than the Kral counterpart. I would expect that the Gunnar shares most parts with the Kratos.

On the other hand, I've not gone inside these major components to look at the insides. I suppose it's plausible that there are common parts inside, but that info will have to come from someone more versed in the guts.



As for comparison with Reximex, if it's the Throne you are talking about, that looks to have a sizeable plenum involved for a similar price point as the Gunnar which does not.