Tired of that, and impatient for them to be made coupled with being in school for manufacturing, I decided to make my own.
So, using measurements from a few hopup arms I have for AK's, measures from a handful of random BB's (taking the 'optimal' size of a bb) I was able to make the mock up of it in Solidworks.
Then, after having it programmed it was run on a lathe.
And here's the final product:

I have some of them for sale in the Classifieds section too if anyone is interested
