MORE MGM INNOVATION!
All law enforcement and military operators train using barricades, which are typically a range fixture. The problem with traditional barricades is that they have a gigantic foot print (considering the size of the barricade), and they are hard to store because of that foot print. Once again, MGM has come up with a user friendly solution.
The MGM Barricade Bracket set includes 4 pieces of steel, two of which telescope on to the other two, as shown in the pictures, and bolt on to your wooden barricade. When you are done training, take off the "feet", and lean the whole thing up against the wall. You can stack 15 of these barricades in an area that previously (because of the foot print) only hold one.
MGM doesn't supply the wood, but that's OK because you want to put your own special holes in it anyway. Any lumber yard will have 7/16" OSB (wafer board) that you can buy for $8-15 per sheet. Cut it in two, in such a manner that you'll be able to double it to make it more durable. The OSB is 8' long, but your barricade doesn't need to be more than 6' tall, so this is easy to do. Doubling it makes it nearly 1" thick, so it is STABLE, but still light enough for one man to pick up and move.