How many parachute jumps have you made with your trusty mickey stocks, [bleep]?
We're talking commercial airliners here champ. What have you done that got you kicked off, mid-flight?
My assertion stands, and I have proof of its veracity. The OP asked for something that would return to zero. The US Army chose what it chose for a reason. The H&S block doesn't "shoot out" or need replacement. Hell, one even withstood being dropped from 800ft when some dumbazz unhooked his lowering line instead of just lowering it. The rifle/stock was still intact.
