I feel somewhat spoiled to have gotten an ICS M4 as my first rifle, as far as the gearbox is concerned. Just finished regreasing the thing, no issues, all in all it felt extremely satisfactory and relatively simple. The split design is an absolute blessing.
The hop unit on the other hand... I seem to have no luck with this thing. Been struggling to get mine shooting decently for months, went through three (soon to be four) buckings, tried teflon/o rings to help increase air seal, switched barrels, etc etc. Just about everything went wrong. Then the frame itself started developing hairline cracks, and I can't stress enough that I'm not at all rough with this stuff. I'm beginning to wonder if I shouldn't just order a whole new unit and discard the current one as some sort of satanic deviance.
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