Thank you... excellent animation!
IMHO the EM2 was the only bullpup that solved the "wobbly trigger linkage" problem by having the sear at the front of the bolt carrier..
In most automatic designs, the sear lies to the rear of the bolt either working on a hammer or connecting with a striker release at the back of the bolt. In a bullpup, this creates a problem because the rear of the bolt is always behind the magazine well when the trigger is at the front of it so that the trigger linkage has to get back past the magazine well to get to the sear. The cross section of the receiver is always at it's thinnest at the side of the magazine in order to minimise the outside thickness of the action. As a result the trigger link has to be even thinner to fit in the space, hence the tendency to wobble..
Apart from the EM2, all bullpup triggers are at the spongy end of cr@p. Most let-offs are about as crisp as wet yogurt...!
Also the Tokarev flap locks do not suffer from the "forward assist feature" of ARs caused by the rotating cam at the end of the stroke.. Gene, you were a brilliant engineer, but you got that bit wrong!