{"product_id":"aac-illusion-9-piston-1-2x28","title":"AAC ILLUSION 9 Piston 1\/2x28 – Nielsen Device for 9mm Suppressors","description":"\u003cp\u003eThe AAC ILLUSION 9 Piston with 1\/2x28 threading is a Nielsen device (booster) designed to enable reliable cycling on tilting-barrel pistols when using the ILLUSION 9 suppressor. This piston allows the barrel to recoil independently of the suppressor, maintaining proper semi-automatic function that would otherwise be disrupted by the added mass of a can. Without a properly functioning booster assembly, most browning-style pistols will fail to cycle when suppressed.\u003c\/p\u003e\u003cp\u003eThis piston installs into the rear of the ILLUSION 9 suppressor and threads directly onto barrels with 1\/2x28 threads, the most common pitch for 9mm pistol barrels. The hardened steel construction withstands repeated cycling and gas pressure. Thread the piston hand-tight onto a clean barrel, then attach the suppressor body to complete the booster assembly. Verify proper headspacing and function before live fire.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Nielsen Device \/ Booster Piston\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch:\u003c\/strong\u003e 1\/2x28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 9mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Hardened Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Suppressor:\u003c\/strong\u003e AAC ILLUSION 9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e For use with tilting-barrel semi-automatic pistols; NFA rules apply to suppressor ownership\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Advanced Armament Corp","offers":[{"title":"Default Title","offer_id":47943425982719,"sku":"AACO64246","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1239561.jpg?v=1766573336","url":"https:\/\/doublestackstore.com\/products\/aac-illusion-9-piston-1-2x28","provider":"Double Stack Store","version":"1.0","type":"link"}