[Drakker]

I have installed that chamber in a TSD VSR clone (with a PDI rubber and a prommy barrel)... worked decently with the stock cylinder head, FPS was a lot more stable than with the crappy stock hop-up unit and the hop-up adjustment is very precise... but once I installed a King Arms cylinder, the slightly thicker nozzle on the cylinder head would not enter the chamber smoothly and I would have to forcefully ram the bolt forward to be able to lock it. It kept shooting ok but the seal was not as good as with the stock cylinder head. It wasn't fun to use, very noisy, probably destructive in the long run, and the crappy TSD bolt handle broke anyway. So it is *NOT* compatible with all cylinder heads, you should definitely get a PDI cylinder if you plan to use it.

I have since acquired a proper TM VSR10 G-Spec and I absolutely do not plan to use the PDI chamber. Stock TM chamber for me. I'm tired of having to adjust the hop up with a specific allen key and I like the smooth operation of the stock chamber. And in my opinion (yep, my opinion), VSR style buckings are far superior to AEG style buckings for accuracy.