No, what he meant was he built it out of 1X2 wood which is the size of the wood itself.  (like 2 by 4).  But he uses thumbscrew fittings instead of nails and screws so you can collapse it.

Building it this way will fit in almost any trunk or backseat of a vehicle.

If you google KHSC target frames it will show the dimensions and type of lumber you can purchase at City Mill, etc.  Or you might find you have the materials at home already.

Security Equipment Gunshop sells target frames that can be used at KHSC.  It's built so you can collapse it.

Jumping over the counter could be justification for the stabbing, but the problem is the guy was focused on taking items from the shelves instead of attacking the store owner at which point the justification ends.  A couple stabs could be justified giving the store owner the benefit of the doubt and heat of the moment, but he should've stopped it earlier when the robber was compliant.

That makes him "Toast".
I used to hope that some intelligent people lived in Hawaii.
Intelligent in the "Common Sense" department.
Given what I've seen in my 22 plus years;
The Government of Hawaii reflects their voters very well and is an excellent
expression of what the majority of citizens of Hawaii really are.
Emotionally immature, fearful, irresponsible, Slaves.
Freedom scares the hell out of most of them.
 

The covid order affects indoor gun ranges, so all indoor shooting ranges on Oahu are affected.  It does not apply to outdoor ranges.