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Jackarutu · February 6th, 2010, 01:52

Has anyone besides myself ran into problems getting the Madbull Tight Bore Barrels to fit into the New Madbull Ultimate Hopup?

The promotional video makes it look very easy. However, I found in reality that the Madbull tight bore barrel because of it's coating is a very tight fit into the hopup unit and it cases the hopup rubber to stretch and pull back into the slot where the inner barrel clip goes.

The only solution I found was to use a single edge razor blade and trim off about 1/16 to 1/8 inch of the hopup rubber. Then when it stretches it doesn't pull back in the the clip slot.

When I used a regular plain jane oem inner barrel no problems they slide right into the hopup with no problems. It's just the Madbull tight bore barrels that seems to have this fitting problem.

I thought perhaps I had a bad one so I opened up 15 of them and all had the same problem so either I have a bad batch or . . .

Any comments?

February 6th, 2010, 01:52	#1
Jackarutu Trader rating Join Date: Sep 2009 Location: louisiana	Madbull Ultimate Hopup fitment problem Has anyone besides myself ran into problems getting the Madbull Tight Bore Barrels to fit into the New Madbull Ultimate Hopup? The promotional video makes it look very easy. However, I found in reality that the Madbull tight bore barrel because of it's coating is a very tight fit into the hopup unit and it cases the hopup rubber to stretch and pull back into the slot where the inner barrel clip goes. The only solution I found was to use a single edge razor blade and trim off about 1/16 to 1/8 inch of the hopup rubber. Then when it stretches it doesn't pull back in the the clip slot. When I used a regular plain jane oem inner barrel no problems they slide right into the hopup with no problems. It's just the Madbull tight bore barrels that seems to have this fitting problem. I thought perhaps I had a bad one so I opened up 15 of them and all had the same problem so either I have a bad batch or . . . Any comments? __________________ I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me.