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The B& T HK UMP suppressor was designed to be mounted on factory UMP flanged barrels. It quickly attaches using a push-button system to factory UMP barrels, as well as aftermarket barrels with the signature UMP flange. The UMP 45 silencer from B& T was designed to handle high volumes of fire for automatic use, but still remain light enough to be maneuverable and not interfere with the handling of the host firearm. B& T QD Flange Mount .45 Silencer for HK UMP45 SD-217831-US
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