Back of his leg, not the front. from just above his knee to up under the backpack? Have you seen the ring camera feeds from the two houses where he has came from by chance? It looked like the gun slipped too far down and so he was limping/couldn't bend knee for a bit until he reached the turn off into the grass where he made some movements to heft it up off his knee area so he could walk better as he headed through the grass and vanished from the footage there.. that is what it looked like to me anyway.. Try and stuff a brook handle down the back of your pants and walk with it resting at the bend of your knee and top sticking into your back, to see what I am talking about, then lift it up higher so your knee is clear.. heh.