Hop up Problems

millermonsterNI

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Hi a friend got second hand TM mp5. It chokes when firing I have tried 2 different hopup rubbers g&g and cheap Brand. Is there anything else that may cos choking. 

 
More information?

Energy output? what bb weight are you trying to lift?

 
As above, what type and weight of BBs are you using?

Have you tried a different brand or weight? 

 
Both .2 and .25g at  1 joule. Brand are rocket and have they fire fine in my own TM mp5

 
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Odd.

TMs should have zero issues lifting 0.25s..

Is the hop unit perfectly aligned to the nozzle?

Is the tensioner applying decent pressure? Is it correctly seated in the hop arm?

You mentioned a G&G rubber which I supposed is the green one, I only had issues with them. They just did nothing-nothing-nothing-JAM ALL THE BBS.

I'd try with a Prometheus purple, I only had great results with them (mind you, I'm capped at 1J too :) ) hopping up to 0.28s nice and straight (wouldn't go heavier, after all it's still a standard mound rubber)

 
Thank you will order up a Prometheus and let you know how get on 

Cheers

 
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