EddieZoom
NES Member
I've had my Aero Precision lower assembled for awhile. Finally got everything else I need to complete my first build....or so I thought.
I've got an upper receiver block but what I don't have is an upper receiver insert / plastic BCG for installing/torquing the barrel nut. Seems that this is supposed to prevent the possibility of tweaking the upper when applying pressure.
I can't seem to find anyone selling these on their own. Some upper blocks come with one...mine did not.
Must have or nice to have ? Any success with DIY alternatives ?
Thx.
I've got an upper receiver block but what I don't have is an upper receiver insert / plastic BCG for installing/torquing the barrel nut. Seems that this is supposed to prevent the possibility of tweaking the upper when applying pressure.
I can't seem to find anyone selling these on their own. Some upper blocks come with one...mine did not.
Must have or nice to have ? Any success with DIY alternatives ?
Thx.