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Best Hop-Up Unit?

Rock-climby-Dave

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Ok, Who makes the best hopup unit for an M4?

and how much do they cost?

what are they like to live with?

try and comment from personal experience of non-stock hop up units and any reviews of said unit.

thanks guise

Dave

 
Last edited by a moderator:
I use the madbull hop-up in my m4 work very nicely the hop-up rubber is very thick and it doesn't move once set.

my is also the tracer unit which i hook up to the 7.4v lipo i run and it works a treat with tracers bb.

$65 from HK inc tracer led

 
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