Quote:
Originally Posted by turok_t
Using steel chamber, steel bolt with plastic original nozzle and RS upper receiver. So far works great, cycled around 400 times. Had to add spacer for chamber to fit snug in upper receiver neck and mod my RS charging handle a bit. FPS relatively the same as before when using stock hop up chamber.
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Hm, perhaps I should try with the plastic nozzle and old school NPAS.