Im the same and can see changes I want or improvements that are needed in every gun I buy, I think of it as personalising it. I also know that Ive transformed some guns as there was so much wrong with how the manufacturer had restricted it to UK power levels it didn’t work as well as it could. The R10 seems to be one of these with ridiculous hammer bounce issues wasting lots of air, addressing that can add dozens more shots perfill, also the regulator has know issues as does the cocking bolt coating which flakes off and contaminates inside the block.
If only manufactures sent out guns built to perfection, all this fixing could stop
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