{"product_id":"jk-armament-155-hub-piston-mount-9mm-luger-1-2x28-black-nitride-stainless-steel","title":"JK Armament 155 HUB Piston Mount 9mm Luger 1\/2x28 Black Nitride Stainless Steel","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eJK Armament 155 HUB Piston Mount\u003c\/span\u003e\u003c\/strong\u003e is a purpose-built \u003cstrong\u003ebooster assembly\u003c\/strong\u003e that lets \u003cstrong\u003e9mm Luger\u003c\/strong\u003e semi-automatic pistols run a JK 155 series suppressor (or any other HUB-pattern pistol suppressor) with reliable, repeatable cycling. The spring-loaded piston threads directly onto a pistol barrel threaded \u003cstrong\u003e1\/2x28\u003c\/strong\u003e, providing the mass and travel needed to unlock the breech as the slide cycles and keep the action running smoothly without the sluggish lockup common to fixed-barrel pistol setups.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003ePrecision-machined from \u003cstrong\u003estainless steel\u003c\/strong\u003e and finished in a rugged, corrosion-resistant \u003cstrong\u003eblack nitride\u003c\/strong\u003e coating, this booster is built to handle the heat, fouling, and pressure of repeated suppressed fire. The \u003cstrong\u003eHUB (Universal Hub)\u003c\/strong\u003e interface is the industry-standard booster pattern, making this piston a versatile drop-in for a wide range of pistol suppressors, not just the JK 155 line.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eRated for \u003cstrong\u003e9mm Luger (9x19 Parabellum)\u003c\/strong\u003e semi-auto centerfire pistols, the JK 155 HUB Piston is a simple, dependable upgrade for anyone running a pistol can.\u003c\/span\u003e\u003c\/p\u003e","brand":"JK Armament","offers":[{"title":"Default Title","offer_id":55064750686530,"sku":"189134","price":90.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_172194e6-1804-40de-948f-15d66a19aaf8.png?v=1784737289","url":"https:\/\/centerfiresystems.com\/products\/jk-armament-155-hub-piston-mount-9mm-luger-1-2x28-black-nitride-stainless-steel","provider":"Centerfire Systems","version":"1.0","type":"link"}