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Quarter Circle 10 Side Charging Uppers

20150805_113602Quarter Circle 10 debuted their aluminum AR lowers that accept Glock mags last year, they now have a non-reciprocating side charging upper on the way. It works with any of Quarter Circle 10’s blow back bolt assemblies (sold separately) and also works with their 9mm, .40S&W, .357 Sig and .45ACP barrels (also sold separately). The Quarter […]

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