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WATCH: SIG Sauer SUR300 Suppressed Upper Receiver

Compatible with the company's MCX lower receivers, the SIG Sauer SUR300 provides a 16.1-inch system complete with a pinned-and-welded suppressor.

Seen at SHOT Show 2019: SIG Sauer SUR300

SIG Sauer developed an all-new MCX conversion kit for AR owners in the form of its SUR300, giving shooters a suppressed upper-receiver group that's compact and quiet.

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