Similar muzzle fuzing system on Boxer CRV. What makes sense for a static AAA system (high volume of fire, rapidly changing target aspect/range, proximity fuzed rounds to increase p/hit) that requires precise muzzle velocity to be effective makes (almost) zero sense for an AFV. 1/ https://twitter.com/fewoessner/status/1319038524939698177

AFV don’t engage primary targets the same way AAA systems do.
They rely on the precise application of accurate fire.
Target feedback is included in the engagement sequence, conserving ammunition.
Ground targets likely to be slower than air targets.
But wait, there’s more! 2/

Primary targets of the CRV are likely to be other AFV, B vehicles, field fortifications, and dismounted troops.
None of these move fast enough to require precise MV as part of the fuzing system.
Unlike fixed AAA, CRV also move through scrub....we’ll get back to that. 3/

But this highly complicated, higher-maintenance, & expensive muzzle fuzing system will allow CRV to engage air targets!
Um, yes, but not successfully. Remember the likely targets? Dual feed ready rounds would likely be HEAT & APDS.
There’s no radar targeting system on CRV. 4/

So, on a reconnaissance task, which of the four vehicles in the troop have anti-air rounds loaded as ready rounds? How many ready rounds are available? Is that number sufficient for the high volume of fire required to defeat air targets - even when cued by radar? 5/

The ineffectiveness of the 30mm system for AAA is tacitly admitted by the proposal of a specific 35mm AAA system....that has radar & more ready ammunition matched to its primary role. 6/ (wiki pic)

The high rate of fire of the gun requires steel-cased ammunition that isn’t compatible with other guns & can’t accept ammunition with aluminium or brass cases. 7/

Remember the muzzle mounting? And that CRV move through scrub as part of their role? Barrel strikes are more likely than not to damage the muzzle fuzing system, likely the single most expensive component of the gun! 8/

So Boxer CRV:
1. Fires ammunition incompatible with NATO allies (less Germany)
2. Fires ammunition available from one OEM
3. Uses a fuzing system vulnerable to damage in the course of its mission
4. Can’t effectively be employed in the anti-air role (effectively purposeless) 9/

5. Adds complexity, expense, & a maintenance overhead for a niche task & subset of potential targets
10/

I’m sure the primary targets of the CRV will be easily destroyed by the most common service rounds...but the technical constraints, incoherent use case, & vulnerability to damage of the system, not to mention that this comes at the expense of interoperability, makes little sense.

Not questioning the need to defeat smaller, non-traditional air threats, but if your answer is to use the main armament of a Combat Reconnaissance Vehicle with none of the targeting sensors of AAA, fewer ready rounds than AAA, a fraction of the training that AAA crews receive...

Then maybe your answer is wrong? “Just because you can, doesn’t mean you should” /fun