ive checked for all of this... the only way to install the hop is to screw the mag release directly through the outter barrel into the hop unit. Doing this aligned the hop window with the barrel... this 'should' be ok and not really causing the issue..
after further investigation the mag seems to be hitting off the upper receiver which you can see when looking into the magwell. i can see a small part of the upper receiver looking into the magwell when full assembled.
this is causing it to align wrong in the well.. to remedy this i have to press in on the mag slightly which seems to align it properly then it springs out no problems..
An ever so slight mis-alignment somewhere/somehow after installing the PDI Hop Up is the cause though as it was not like this with stock hop up
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