Buy the TM Precision chamber from Airsoft Atlanta: http://www.airsoftatlanta.com/Tokyo_Marui_Brass_Barrel_New_Chamber_airsoft_VSR_p/17961.htm
I believe a couple of HK or Japanese shops also have it with more reliable stock than AA.
It is better than the stock chamber (although still shim and all that), but doesn't need the full PDI internals of the PDI chamber. If you decide to go PDI internals, might as well get the PDI chamber, but I've heard horror stories about the finickiness of the PDI system.
I believe a couple of HK or Japanese shops also have it with more reliable stock than AA.
It is better than the stock chamber (although still shim and all that), but doesn't need the full PDI internals of the PDI chamber. If you decide to go PDI internals, might as well get the PDI chamber, but I've heard horror stories about the finickiness of the PDI system.