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AUSA 2018 Warriors Corner #19 Long Range Precision Fires Cross - Functional Team Update with Col. John Rafferty, Col. Chris Mills, Col. Will McDonough and Mike George
 
https://www.dvidshub.net/video/embed/631880
 
58-caliber M109A8 test footage at the beginning of the video. Credits to Damian90 on AW forums.

@Mighty_Zuk you can't neck out 40CTA to 65mm.
 
Also the gun on the Griffin is 50x228 while IIRC supershot was 50x330.
 

...
...
https://www.shephardmedia.com/news/landwarfareintl/ausa-2018-close-50mm-super-gun-photos/  

From Jane's:
 
"The demonstrator is an upgraded M88A2 with a seventh road wheel to help alleviate ground pressure and new hydropneumatic suspension units (HSUs) that enable the track to be locked out, Miller said. The M88A2 requires a soldier or marine to exit the vehicle and use objects (typically wood blocks) to lock out the track. The intent is to upgrade existing M88A2s to the A3 configuration.
BAE Systems is recommending that the vehicle's air-cooled engine be replaced with a commercially available, liquid-cooled, 1,300 hp caterpillar diesel engine; its transmission would be replaced with a modified Abrams tanks transmission."
 
So 7th road wheel to reduce ground pressure, new suspension,  track lock out, recommended engine and transmission change.
 

It’s an evolution of there first TactiCam :

M88A3 with hydro gas suspension. 
 

https://www.businesswire.com/news/home/20181008005240/en/AeroVironment-General-Dynamics-Land-Systems-Join-Forces


 
 
 
also from twitter:



.

/well, this thing is even more interesting than my (wrong) guess about MCAS/














 




and this collage:
 

Griffin III with 50mm gun, now with a bigger image.
 

Concept vehicle for NGCV.

There was another Vehicle under a tarp at the GD stand....presumably the Griffon. 
 

In a period where everyone is calling for tanks using APC chassis, a recall from the past :

Ok, Iran, maybe it is time to stop parading those type of creations?

1

@N-L-M@Collimatrix
 

 
Presentation about big caliber guided shells from an AC-130. This isn't the complete presentation but I wasn't going to screencap and upload 52 sheets. This is most of the interesting stuff anyway.

A few days ago the folks from Warthunder went to Minnesota and measured some details regarding the physical thickness of the armor of an original M1 Abrams tank, something which was already mentioned in the United States Military Vehicle General topic.
 
 
The English version of the article can be found here. I decided to take these values and combine them with the schmatics of the original composite armor (aka "Chobham", "Burlington" & "BRL-1") fielded on this version to estimate the overall armor thickness. The scan quality of these schematics is low (the paper wasn't flat when scanned, so the lines are not always straight), but I tried to adjust for this as good as possible. It seems that these schematics are not for scale or the measurements were wrong (though that doesn't seem likely).
 
Overall it seems that the armor thickness has been exaggerated quite a bit; some people said it would be 700 mm or even 750 mm, but most results end up being below 600 mm. I guess the most damning argument against the overall thickness being in the 650-750 mm range is the claim, that the distance between weld lines on the hull floor is just 22 inches (558 mm). Even though it isn't clear wether this includes or excludes the weld lines, it more or less means that overall cavity thickness is way below 558 mm. Add to this a 101 mm backplate and a 31.75 mm frontplate (both sloped) and 700-750 mm armor thickness becomes impossible, IMO 650 mm aswell, but I've never seen exact angles for the LFP and the hull floor.
 

 
WT also measured the thickness of the turret's armor cavities, but they didn't mention if that includes slope and they didn't mention the exact thickness of backplate, but it also doesn't seem to warrant the 700-800 mm thickness sometimes claimed. Armor cavity thickness was 19.5 inches on an unspecified side of the turret (the horizontal slope of the turret front is assymetrical), but the front plate is 1.5 inches (38.1 mm) thick.

Shamelessly stolen from Damian90 on AW forums:
 

 
M109A6 testbed with the M109A8 turret and M907 ERCA gun (I thought it was a 52-caliber barrel, but apparently it's 58).
 
EDIT: to be honest, the grainy quality and color palette of this picture originally made me think it was taken in the 1990s and depicted instead a M109 retrofitted with the XM2001 Crusader's XM297E2 gun (the previously seen ERCA testbeds were also sprayed desert tan rather than olive drab). But then again it's not the first time we get pictures taken with potatoes, even in 2018.

It’s an 1V119 Reostat.

From an exhibition:
 
Namer:
 
Eitan:
 
Achzarit (aka 'bolt simulator'):
 
Puma:
 
Merkava 4M:
 

Maybe something on the (remote?) turreted/RWS ACV 1.1?
 
 

Credits @ Zachi Evenor