Oh yes it will shortstroke!!!!!
I was screwing around with an idea I had......if you're using an AR in a "house clearing" setting, with a full stock, could you tuck the stock WAY under your armpit to reduce the overall length of the rifle, to make it harder for somebody to grap the weapon if you're going around doorways and tight corners...... if you need to shoot the gun fast, bring it up and use a "nose to cocking handle" hold for a fast shot.
Idea didn't work. I tried to with a "Limp wristed" hold, let the rifle recoil almost freely.....(Almost hit my nose a couple of times, no fun at all!) She'd jam about once every 3-5 shots.....
AoD