Hey guys... sorry if this is posted elsewhere, but i need some info on how to solder the hole that has been drilled to decrease FPS in my gun. Ive got my PAL now and i want to upgrade it. Im hoping it isnt too hard, or cost much money. Cheers. 
http://www.canadiantire.ca/browse/p...T<>prd_id=845524443311035&bmUID=1368269330084
http://www.canadiantire.ca/browse/p...T<>prd_id=845524443311035&bmUID=1368269330084




















































