The CORE-556 was designed to complement the most prolific firearm platform in the United States. Intended for AR-15 and M4-style rifles, carbines, and pistols chambered in 5.56 NATO or .223 Remington, it delivers on the performance standards expected of all KGM Suppressors, in a streamlined and accessible package.
Shop with Monadnock Firearms
Monadnock Firearms is your online destination for firearms, ammunition, and tactical gear—shipped nationwide. Established in 2017 and based in Fitzwilliam, NH, we combine expert service with a seamless eCommerce experience. Proud supporters of Gun Owners of America (GOA) and defenders of the Second Amendment.
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