I bought it. Cost me $82 plus shipping. Now I need the P7 one and I’ll be good to go. Thanks for the heads up @cromag27!

 

nice score! there are some (mp5) on gunbroker for double the price but horrible condition.

i’m also looking for the p7 next.

 

I got this one at an auction a while back.

 

(from the poster)
Which HK products are these? Or something else?

 

I think this poster was made while HK was owned by British Aerospace hence the helicopter. I could be wrong though.

 

I enjoy thinking of sales employees pivoting- “Oh if you’re not interested in our superior roller lock small arms perhaps I can help with your helicopter HVAC system?”

 

(from the poster)
Which HK products are these? Or something else?

First of all: I don't know the specifics of these, but...


a) HK marketed ring mounts and other machine gun mounts for their products. I assume these are 3rd party products exclusively made for HK by a supplier.

This is just an example, there were several flyers/marketing brochures about their gun mount program(me).


b) HK is closely located (and historically somewhat related) to Rheinmetall (formerly Mauser) in Oberndorf and until today design and build autocannon ammunition feed systems for parts of Rheinmetalls product line.

That...

helicopter HVAC system

...is such a feed system.*


Both the current Eurofighter BK27 has a HK made feed system, as well as previous fighters had. HK also manufactured the feed system for the Wiesel AWC's 20mm MK20/Rh202 autocannon.

I actually posted a bunch of pictures of that HK feed system a few years back:

https://www.hkpro.com/threads/hk-mg3.538744/?post_id=3926629#post-3926629

* The schematic shown is either a closed-loop system taking empty shells back into the ammunition store (with the drive system not pictured), but it's more likely a dual-feed system to choose between two different ammo types, which in turn would point again to the MK20/Rh202 which is also dual (or even triple when combined with a directly attached box magazine for certain applications) feed and thus in turn point back to the HK/Rheinmetall/Mauser autocannon cooperation (see pics in link above).

The Rh202 was quite common and popular back in the Cold War days, with Rh202s used as towed "Fieldcannons" for AA (single and twin mounts) and site protection (in the past and now sometimes vehicle mounted "technical-style") and main armament for APCs like Marder or Luchs or AWC Wiesel. It saw Navy use on fast boats and ships until replaced by the MLG27.