Originally Posted by
LRRPF52
Heads Up:
There is a batch of pivot pins and takedown pins for the Aero M5 receivers that have too deep of a detent catch cut in the tracks for the closed position.
What ends up happening is that the pivot pin will not move at all without destructive force.
Do not attempt to punch the pin out if you find yourself in this position. Get a hold of Aero and send the lower back to them for repair.
With the pins being hardened units, I'm not sure how they will fix it, but attempting to punch the pins out with force will shear the aluminum at the opening to the detent channel in the lower, and permanently damage the lower receiver.
Carry on with the customer beta-testing phase.