I forget the polymer we mixed a while back.
but it is tested to this exact thought,
plus many others.
detent placement can be
The nubbin is my only complaint with twist lock. I'm die hard twist lock. But nubbins need manipulation to have enough tension for force fed hoppers.
How about a nylon tipped front frame screw that goes into the body just a little bit. So basically only the nylon tip would stick into the body.