9x19 "sealing dummy" for GUU-6/P and GUU-7/P pistols

I know we discussed these dummies here before but I never saw anything official on these.
In the web I have found these few pages of what appears to be from the official manuals.

Maybe of interest to somebody.

GUU-6/P (Smith & Wesson)

GUU-7/P (Beretta)
9x19_GUU-7-P_USA-

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Check this previous discussion: Some pistol cartridges to ID

Ah, tere it is, good you linked it!