[Darksheare]

FAMPL Ping

"The system, though light and nimble enough to reach speeds of 55 mph, offers an extremely stable firing platform, in part due to a highly efficient muzzle brake that Vickrey said was 58 percent effective in reducing recoil and cuts blast overpressure by 50 percent."

Now we know why the Stryker light SP hopwitzer doesn't have spades or outriggers.
But the traverse is still artificially limited due to stability during broadside shots.

[Poodlebrain]

Are each of these vehicles self-laying? If so, they will probably be employed in shoot-and-scoot mode, and the limited traverse should not be a serious limitation.