dvl_mchn, on Jan 12 2009, 06:54 PM, said:
He probably means 485-490. My M4S has a Systema M130 Spring, Systema Type 0 cylinder and Jbu 407mm TB and mine has settled at almost consistent 475fps w/.20. Down from 499fps when I first put it in. The springs on the KWA guns (at least the m4) is alot shorter than most aftermarket springs, so the KWA spring will probably not push out as many fps as aftermarket when settled. IMO
That's kinda what I was looking for, I know the stock springs are a little weaker than after market springs, but considering our limitations for AEG muzzle velocities I listed above that's exactly what I want. My other alternative was to put in a guarder or systema SP or M 120 series, KWA gearbox has pretty good compression stock, so I don't see any issues if I needed to go that rout, but the stock M130(more like an M120) should be just about perfect for my purposes, if it settles at 410 with .2g's, I should still be full auto legal as that's pretty close to 400.
Also that just shows the quality of a KWA gearbox, my SLR has a guarder SP120, which is probably more like the spring rate of KWA's M130, but it only shoots 405 with .2's and that's WITH completely upgraded cylinder/piston/nozzle sets and a TB barrel. So I think KWA's tweaks really all come together and work well out of the box.
Currently its can bottom capable, although that can be an inaccurate test the bottoms of cans very from can to can and company to company, but its a decent ball park estimate. My CA SLR as 403~405 on an actual chrono, but it would only crack or barely go through the bottom, my KWA cleanly goes through and even puts a dent in the top of the can, so its pushing around 410~430 range right now with a stock barrel, I have a promy 6.03 coming soon, so if it settles at 410 i'm good to go!
Edited by WiN&LeGeNd, 13 January 2009 - 05:54 AM.