Curly68 Posted January 9, 2013 Share Posted January 9, 2013 I am wanting to upgrade my CQB rifle with a 6.03 tightbore and was thinking about changing the hop unit at the same time. The only tightbore I have found (229mm) is the Madbull one, so logically thought about the ultimate hop unit as well. Any thoughts on these or any other recommendations please? I also have a no name motor in there which has no marking what so ever. Is it worth upgrading that as well? Thanks Link to comment Share on other sites More sharing options...
RR01 Posted January 9, 2013 Share Posted January 9, 2013 Yes to Madbull Ultimate. I've got four in my rifles and find them easy to set and they stay where you set the hop. That said, they work best with the Madbull V2 Black Python inner barrel. I have found they are a bit tight if using with some of the thicker walled inner barrels, as they then can distort the hop rubber when fitting to the hop unit. Link to comment Share on other sites More sharing options...
the_robbo Posted January 10, 2013 Share Posted January 10, 2013 In a word yes Link to comment Share on other sites More sharing options...
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