Ethos Magazine plug rattle

[Rexmay]

Just got a brand new ethos.  Put it together out of the box.  The little aluminum magazine plug rattles like crazy. Driving me insane. I can’t get the cap to tighten it down to keep it from rattling. Am I doing something wrong? Anyone ran into this?

[iabenelli]

Just bought ethos sport and I have the same issue, any fix to this or possibly switch to different mag plug?

[remarkable]

This is normal, enlarge the end of the plug slightly for a solution.