If you guys have the Battle Arms bolt catch release - does it run against your upper?
With the large paddles, wondering if it hits your upper which might prevent function or releasing fully?

I have an Aero m4e1 upper, which is a billet look... so if you guys happen to be running the same setup please comment!
Thanks

I've run the Geissele Maritime Bolt Catch on my M4E1 uppers with no issues. Currently I have the Forward Controls Design bolt catch on both rifles equipped with the M4E1 uppers; no issues there that I've noticed. While I don't have any experience with the Battle Arms bolt catch OP, I doubt you'll have any issues with it on the E1 upper, since while it has the billet look, the dimensions are pretty damn close to that of other "mil-spec" uppers.

Thanks for the info... and yea, Aero's "billet look" uppers do look close to my "mil-spec" uppers by eye balling it, but it is hard to tell.
On one of my PSA uppers, my standard bolt catch release button does seem to rub up against the upper itself, it functions fine though.

I have heard great things about the Geissele Maritime catch; I am running some other Battle Arms items already (Mag release, ambi safety) so figured I would just match up some of assecories with using the same maunfacturer.