BudsGunShop.com - is this a gen 4,5,6

Alvin, it looks to be a Gen3 (Gen4's have different grips etc). Buds Customer Service should be able to confirm this with their Inventory Department at 859-368-0371, 9am-9pm eastern Mon-Fri Or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon - Sat and closed Sunday.

From what I'm reading this is current gen so gen 4. Hope this helps.

I couldn't find any info on the gen
Call buds during buissnes hours at 859-368-0371, 9am-9pm eastern Mon-Fri
Or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon - Sat and closed Sunday, they may have more info