Not really a Striker, but the closest thing around is the bbi LAV. I here it's going to be getting a re-release too, as there was some found in a warehouse.
For the M113, 21st Century Toys makes one. It needs work, but it's out there and has all the hatches and stuff that open.
Bruder makes some really cool stuff and it works great with Joes and other 1/18th scale figures. Some of the stuff can even be found at TJ Max and Ross stores.
Many of these items can be found if you do some deep searching. I know sometimes they are not cheap when you do find them though. Some are not exactly what you have in mind also.
I myself would like to see some police cars that have all the doors open, meaning it has to have 4-doors

. That is one thing that bugs me about some of the 1/18th scale cars when they have the 4-doors, as only the front two open

.
Trains and that type stuff would rock, but the closest you can get is 1/20th (G scale) or 1/22nd which are costly too. Most of the larger scales are always custom jobs, that I have seen

and very, very pricy too.
momaw nadon
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