The bolt hold open is HK style with the charging handle. There is a groove at the rear of the movement, and you can give it the ol HK slap to release as well. I have not figured out how to make the bolt releae a hold open, I don't think it is designed with that in mind
I have been practicing for high seed tac reloads and I have not yet mastered the best way...
So far muscle memory has provided me with fast reloads by:
removing mag from pouch, placing between middle finger and ring finger, mag facing feed lips forward (toward muzzle),
using edge of thumb disengage mag release (with same hand)
use web of thumb to wrap mag and withdraw,
move hand over slightly insert mag, slap charging handle
place mag in dump pouch, iside shirt, cargo pocket or whereever you choose...
practice till fluid
I am open to suggestions as well as pointers as I am well schooled on AR's and M14's the Aug style weapons are a month new to me....