Gaz259 Posted March 23, 2014 Share Posted March 23, 2014 Hi all I need a little help, I have a G&P M4 Viper that I want to add a suppressor to, preferably a QD one but Im not sure if I need to be buying a clockwise or counter clockwise thread. I also think I need a QD one to just slip over the flash hider as it sits slightly inside the RIS rails, can anyone offer any advice please ? Link to comment Share on other sites More sharing options...
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