SMC9 Drop in FPS

By acemace021,
March 3, 2022 in Gas Guns

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acemace021

Posted March 3, 2022

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Posted March 3, 2022

As title states got the gun last week which’s look smart, on site fired at 315FPS on Nuprol 4.0

The issues started when fitting tracer at the time I didn’t realise that the tracer was pushing back the unique hop adjustment which essentially put hop up on full.

so I managed to print a little ring to allow me to screw on the tracer without fouling the hop-up

got home this week and using the built in chrono within tracer i’m averaging 250fps, so decided the problem must the rubber which I changed, but still no

joy as to why the fps has dropped.

Anyone got one and had this or similar issues or knows what it might be?

Thanks in advance

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This thread is over three months old. Please be sure that your post is appropriate as it will revive this otherwise old (and possibly forgotten) topic.