CQBR inner barrel length?
 

Howdy, I've been searching the forums i can't find a consistant number being quoted for a CQBR inner barrel. When I first made this gun, nobody produced an actual cqbr length inner barrel, so i think i used an mp5 barrel which is much shorter than it should be.

I'm looking to throw in a Madbull tight bore, any help on the length would be much appreciated.

Could't you just measure your outer and add whatever needed to reach the hopup and see from there?

It shouldn't be that hard. As for my M4, it came with a 315mm inner; I put a 300mm Prommy in it (315mm length doesn't seem to exist anywhere). But a lot of "short" length are available at varying size, I'm sure you could find a near-perfect fit.

I believe it should be 300mm.

CQB-R (7" handguard + gaz block + 1/2") is 315mm

CQB (7" handguard + gaz block, barrel threads are flush with the gaz block) i 300mm

My G&G stock length is 275mm, I can fit a 300mm with existing flash hider. Any longer and it would require a silencer to cover the extra length ie. a 363mm would need a 100mm silencer

Thanks for the help guys.

I am searching for inner barrel cutting and came upon this thread, I appologize to bring this back from the dead...

In regards to a CBQ inner barrel can't you just purchase a longer inner barrel and then cut it to sized you need?

Yea, but that's a pain in the ass unless your proficient at crowning a barrel. Might as well just buy the correct length in the first place.