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556 lower

The SR-556 is a semi-automatic AR-15 style rifle manufactured by Sturm, Ruger & Co. The rifle was introduced in 2009 in .223 Remington/5.56×45mm NATO and as a .308 Winchester AR-10 variant in 2013, the SR-762. It is one of several AR-15 rifles to use a gas piston operation.

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  1. iankemp85

    AR lower trade?

      1. Want to Trade For
    • Hillsboro/Beaverton
    • Oregon
    I have an ORW fully build lower I want to trade for another lower. I think ORW sells in house full built lowers for around $600-$700-ish. Message me for parts used in the build. I’m willing to throw a little cash down or ammo or mags, whatever, on top as well if you think yours is worth more...
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