There was some durability issues that were present during the testing of the 2.1B and 2.1C (macaw and conure). There are some small changes I can make, but ultimately, I don't think the hollow nubs will hold up to the repeated impacts. I am replacing the hollow nubs with an angled nub, and I will have some preliminary results in the next few days. Hopefully I can make the changes in time, but there may be a delay of a few days.
AIRSOFT PRECISION DYNAMICS - Augmenting Reality