Prometheus airseal nozzles rock!
I have a stock TM M14 OD. Installed a Prometheus Ms110 spring and Prometheus airseal nozzle, thats it. In my experience a Prom Ms110 spring in a TM G36c delivers 355fps, in a TM M4 delivers 365fps, in a full length CA36 it delivers 390fps (with tightbore, rest where stock barrels, all with hopup off.) My M14 is now shooting 420fps with the hopup off, 406fps with the hopup properly set for BB Bastard 0.25's. Just a heads up that Prometheus airseal nozzles are damn good, brought me up at least 20-30fps for that one piece alone. Now I'm afraid to get a tightbore for my M14 in case it brings me up another 5-10fps.
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