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Power Pair: FN 509C and 503 Review

The 509C and 503 are both worthy entries in the concealed carry market—the first as a full-featured compact that borders on subcompact territory, and the second as a capable, single-stack micro.

New for 2020: FN 503

Designed for concealed-carry use, the FN America FN 503 is a slim, single-stack handgun chambered in 9 mm Luger.

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