Originally Posted by PHC1
Thinking of adding to the collection another AR15 rifle. Anyone familiar with the SIG 516 vs 556? What are the differences? Which one to go with?
Do you have specific use in mind for the gun? The problem with piston operated guns is they require model/mfgr specific parts should you ever have a need. With a generic AR gas gun about any makers parts will work. Last I read the military is sticking with the direct-impingement gas guns for 5.56.
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