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The smart Trick of hk That Nobody is Discussing

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A schematic of your Heckler & Koch roller-delayed blowback mechanism The HK21 is often a selective fireplace roller-delayed blowback-operated firearm using a semi-rigid locking system made to retard the rearward movement with the bolt. This hold off was obtained by artificially expanding the inertia in the bolt by utilizing an https://jaredrgrbj.dsiblogger.com/55782258/the-5-second-trick-for-hk

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