Are you talking about the Texton squad automatic weapon or the rifle bid? I thought the rifle was a complete mechanical system... though more complex for sure with the lift and everything but the fire control group was fairly similar to a AR15/M4... I haven’t managed to get images or video on the saw so I don’t know about that side tho...
As for the UGL mechanism, just in case of any misunderstanding I am not talking replacing the rifle’s trigger mechanism but the underslung grenade launcher’s, so that the placement of the trigger can be more flexible rather than having the trigger directly behind, think M203, or have a clunky trigger plus grip beneath the fire control group of the UGL, think M320... my thinking was so that it doesn’t interfere with reload on the QBZ-191 and less bulky... so I was thinking either a straight up solenoid striker or something like replacing the trigger action with an electrical base system, something akin to solenoid to release a spring tensioned striker or hammer or whatever...