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Anybody here have a Ruger SR 556 and change the trigger to a two stage trigger ? I'm thinking of changing the trigger on mine . I have not yet checked the pin size. I hope just to put a Rock River two stage NM trigger in SR 556 if the pin size is correct. I like the Rock River trigger for out of the box and price its pretty nice. Ruger makes a two stage trigger at twice the price. Thanks
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