SRC M4 upgrades??
anyone here own one??? i own a src m4 ris...i got it upgraded b4 i shot a single round....so far i got metal bushings, spring (pdi 150..ithink), piston and cylinder head think.
what else should i do?? any how to's to take the ris off?? and front sight??
thnx for any help and suggesttions in advance..
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