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Rock River Arms begins the year by releasing the Operator DMR series (Designated Marksman Rifle), with no less than four models chambered for .308/7.62×51 and two models chambered in .223/5.56 NATO. The .308 version comes in two barrel lengths, 16″ or 20″, with an optional SilencerCo Chimera 300 suppressor. The .223 DMRs also come in 16″ […]
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