Tweetimo, you want your arms bigger gain weight,,, I believe like 10 lbs usually puts like a half inch or so on the arms. focuos getting the squats/deads and bench up , keep packing on the wegiht and i really dont see how you can't grow...
also extreme stretching to stretch out the muscle fascia (kinda like a natty way of doing synthol) can help....
stop quoting the pros too