I have a CA SR16 I am debating parting with. It is stock plus a madbull tight bore barrel. I picked it up in a trade and seeing as I have the CA25's and don't really need it. I put the full stock back on it so it will be included. I am asking $250 and will toss in an Intellect 3600mah battery as well. This gun has very little use and has pretty much the same gearbox as the new 2009 models. Its all stock but what CA considers Upgraded with the cylinder set and bearings.
Link to it on Airsoft GI
http://www.airsoftgi.com/product_info.php?cPath=139_24_91&products_id=1907
Link to it on Airsoft GI
http://www.airsoftgi.com/product_info.php?cPath=139_24_91&products_id=1907