Madbull Hop-up Issue

[SSTSparkz]

I have tried putting my madbull 3 in 1 in my custom built M4 which the reciever and the gearbox is both APS. When I fire I get 1 of every 3 shots actually fire I have compared this to the hop-up unit that does work but cannot see the difference in size between then both. what's causing the miss feed any ideas?

[B.E.N.]

Re: Madbull Hop-up Issue

I had some luck fixing an error with mine by filing a TINY amount off the surface that touches the gearbox, but you have to be super careful.

Aside from that, remove the BB retaining o-ring under the feedpipe and s a last ditch, fit a sector clip inside your gearbox.

[imperfect_design]

Re: Madbull Hop-up Issue

Off chance its bb quality as well mate, for example the ultimate hop i had in my 733 fed every time on blaster devils, but it never feeds the Z1 bb's available at our site

[Caveira]

Re: Madbull Hop-up Issue

Off chance its bb quality as well mate, for example the ultimate hop i had in my 733 fed every time on blaster devils, but it never feeds the Z1 bb's available at our site

Exactly the same as mine.

[SSTSparkz]

Re: Madbull Hop-up Issue

I'm using ASG's open blasters BB's which should be an issue but I will look in to the hop distance towards the gearbox. What is a sector clip?

[SSTSparkz]

Re: Madbull Hop-up Issue

Shouldn't*