The Locust is too large. Half of the prototype locusts we received were printed too large, and one of the large ones was primed. (And even still, behind the scenes, for nearly 15 years there has been a struggle between "let's keep this in scale" and "no, LARGER!")
Those are not production basis. The *prototype* models are not based. These were based and likely gravel added before priming because standard hollow bases were used. I'm not sure.