{"product_id":"yankee-hill-machine-crush-washer-1-2-ar-15-5-56-6-8-spc-9mm","title":"Yankee Hill Machine Crush Washer 1\/2\" AR-15 5.56\/6.8 SPC\/9mm","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eYankee Hill Machine Crush Washer\u003c\/span\u003e\u003c\/strong\u003e is a precision shim designed to index and lock any \u003cstrong\u003e1\/2\"-28\u003c\/strong\u003e threaded muzzle device on your \u003cstrong\u003eAR-15\u003c\/strong\u003e barrel. It is rated for use on barrels chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e5.56 NATO\u003c\/span\u003e\u003c\/strong\u003e, \u003cstrong\u003e6.8 SPC\u003c\/strong\u003e, and \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e9mm Luger\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eManufactured from \u003cstrong\u003e12L14 steel\u003c\/strong\u003e, this crush washer is designed to deform under torque as the muzzle device is tightened against the barrel shoulder. Once crushed to spec, the washer conforms to the barrel face and provides a solid, repeatable seat that holds the orientation of flash hiders, muzzle brakes, compensators, or thread protectors through recoil and heat cycles.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThis is the same OEM-style washer YHM uses on their own \u003cstrong\u003e5.56\u003c\/strong\u003e barrels and muzzle accessories, and it fits the standard \u003cstrong\u003e1\/2\"-28\u003c\/strong\u003e thread pattern common to most AR-15 barrels in the supported calibers. A low-cost consumable that should be replaced each time a muzzle device is removed and reinstalled to ensure proper timing and a clean clocking of ports, slots, or prongs.\u003c\/span\u003e\u003c\/p\u003e","brand":"Yankee Hill Machine","offers":[{"title":"Default Title","offer_id":55342174077250,"sku":"YHM285CW","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_7f7b168c-4e99-4ed1-9f71-9fa860e90f0e.jpg?v=1785179507","url":"https:\/\/centerfiresystems.com\/products\/yankee-hill-machine-crush-washer-1-2-ar-15-5-56-6-8-spc-9mm","provider":"Centerfire Systems","version":"1.0","type":"link"}