Originally Posted by frackz
i hope parts are interchangeable ! would like a little stronger hop up to use with heavier weight BB's.
if you get your PTW from double tap the hop up mod is already done, I started to use .45 on my M16A3 with the red cylinder just for shits and giggles and it have no issues, straight and far. My M4 also with the tackleberry mod also have no issues using heavier grade bbs