I'm interested in this as well. Gutting the compression system on these guns makes them pretty great, but the chamber itself is definitely a weak point. It works well enough left as-is, but since it's just crummy poly built to low-tolerance it has a hard time holding hop when set to anything higher than 'meh'.
It's pull-arm type but I'm not sure which (arm is hidden by the ejection port, NOT old TM/ CA front-pull), and eyeballing it indicates that wheel-type V2 chambers won't clear.
It's not a 100% necessary upgrade, but it's pretty much the last link to making these decent guns pretty great, and the stock chambers will fail eventually.
Edit:
This is also important due to nozzle matching, and the stock nozzle is crap.
Last edited by Cliffradical; May 12th, 2014 at 13:40..
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