I am having multiple issues with the Lonex hop up unit: double-feeding (particularly on semi-auto), jams, and poor to very poor airseal. The problem seems to stem from a couple of differences in how the Lonex hop up is constructed:
first, take a look at the difference in flange thickness between the two ("A" is Ares, "L" is Lonex)
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While that tiny little bit may not seem like much, it is enough to make it IMPOSSIBLE to install the Lonex hop up without altering the hop up spring length: I used the old trusty Dremel, and cut the spring down by about 3mm.
Second, the flanges are a bit to wide, and require filing to fit properly (quick fix). The metal alloy Lonex uses for the hop up is surprizing hard!
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Third, the Lonex body is noticably thicker than the Ares. Normally a good thing, this extra material actually seems to result in the magwell not seating properly:
This is how the magwell seats on the OEM Ares hop up...
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...and this is how it seats on the Lonex
Notice the difference in the gap between the top of the hop up and the magwell? While the Ares is almost spherical, the Lonex is decidedly oval. I am not certain, but I strongly suspect that because of the extra thickness of the Lonex hop up, the magwell is pushing "up" slightly on the hop up, and slightly springing the inner barrel. If that is the case, it would help explain why the Lonex hop is so hard to tune!
Fourth, once assembled you can see a very large difference in how a BB sits in between the nozzle and the hop up. If you look at the following photos, you can see that while the Ares holds a BB almost perfectly, the Lonex has enough space for a BB and a half! I figure that extra space is the main reason I get consistent double-feeding.
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So, suffice it to say, I am re-installing the Ares hop up until such time as it breaks, or I find a 100% compatible replacement. I think with a little light machining, the Lonex could be made to fit and work well, I just don't have the time to fiddle with it. So, as far as I am concerned, the Lonex hop up unit is NOT compatible with an Ares G36.