It is a facinating weapon and a real example of aggressive design out of a military procurement organization. What would happen if the next iteration of the AR had a piston and a cable in it...the H&K 4416! In some ways it is too bad it was never widely adopted and really tested out. If there is someone who can make a gun with a lot of springs work I expect it to be the Russians, but no matter how much skill you have with the metallurgy there is much bigger challenge of getting troops not to lose the pieces when that puzzle comes apart. Very cool pics, thank you for posting them.