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JP recoil spring system
#6
It hasn't yet been tested on the grendel. They're finishing testing on the Large frame (AR-10, LRP-07) platform. It's suspected that when used with one of thier ajustable gas systems , it should work as well on the grendal as it does my .223 wylde
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JP recoil spring system - by infidel470 - 02-13-2012, 07:20 AM
JP recoil spring system - by Schwag173 - 02-13-2012, 03:32 PM
JP recoil spring system - by Drifter - 02-13-2012, 03:59 PM
JP recoil spring system - by infidel470 - 02-13-2012, 04:14 PM
JP recoil spring system - by jkingrph - 02-13-2012, 11:48 PM
JP recoil spring system - by JPCTR02 - 03-02-2012, 08:25 AM

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