michalfo1988 Posted June 17, 2018 Share Posted June 17, 2018 Recently acquired a a&k m249 looking to upgrade the barrel the hop unit and hop rubber and I am curious as to what would be the best options any help would be appreciated cheers Link to comment Share on other sites More sharing options...
Supporters Lozart Posted June 18, 2018 Supporters Share Posted June 18, 2018 Bullgear hop up is the go-to for the M249 (not cheap though) Link to comment Share on other sites More sharing options...
Supporters Druid799 Posted June 18, 2018 Supporters Share Posted June 18, 2018 Have a look on YouTube there’s a shit load on there for up-grading it (me personally I think your better off watching vids than asking advice on a forum , video V written word ?) where I got most of my knowledge from . Link to comment Share on other sites More sharing options...
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