The YHM Nielsen Booster Assembly replaces the direct thread adapter on a YHM Sound suppressor or any other suppressor on the market which utilizes the 1 3/8″-24. They are designed to be used with handguns and barrels which require a Nielsen Piston spring.
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ADVANCED ARMAMENT COMPANY 65002 Ti-Rant Piston Conversion 9mm/45ACP M13.5×1 LH Steel Stainless
$74.99
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