I ordered an autocannon and the recently released British Space Force gun carriage from their Print on Demand range.
The 16mm diameter wheels, autocannon, ammo box and handles are in the usual Anvil resin. The gun carriage is printed in high resolution resin.
I am not sure how to crew this weapon.
The options are use a kneeling Anvil figure (not sure about the particular theme) or fit electronic sights and servos together with Stargrave troopers with remote controls.