Mod or build a new knocker valve? It would do the trick and be reliable and as consistent as possible with the system it uses. It'd be a PITA to make more than one for me...but on a cnc lathe not too bad.
I haven't pull a valve from those mags...but I have a couple of mags. If you want to borrow one to mock up dimensions etc...you're welcome to it.
I wanted to make a longer inner for it, the inner is pretty short as it is. Maybe mod/improve the hopup as well. Winter projects....
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