{"product_id":"hiviz-arn101-ar-vertical-tritium-front-sight-black-post-for-ar-15-m4","title":"Hiviz ARN101 AR Vertical Tritium Front Sight Black Post for AR-15\/M4","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eHiviz ARN101\u003c\/span\u003e\u003c\/strong\u003e AR Vertical Tritium Front Sight Post is a drop-in upgrade that brings \u003cstrong\u003e24-hour illumination\u003c\/strong\u003e to your rifle's existing front sight tower. Designed to fit most \u003cstrong\u003eAR-15 and M4\u003c\/strong\u003e rifles equipped with the standard \u003cstrong\u003eA-Frame\u003c\/strong\u003e or \u003cstrong\u003efolding\u003c\/strong\u003e front sight base, this replacement post installs in place of the factory sight blade and is locked in place with the included detent and adjustment tool.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eInside the post, a self-contained tritium element delivers bright, fully encapsulated illumination that does not rely on ambient light, so you can confirm your front sight picture in low light and at night without batteries or fiber-optic light gathering. The \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003egreen tritium\u003c\/span\u003e\u003c\/strong\u003e vial provides the most visible color option in dark conditions and is widely favored for defensive and service-rifle applications.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe post itself is molded from lightweight \u003cstrong\u003epolymer\u003c\/strong\u003e to keep weight over the bore to a minimum and is finished in matte \u003cstrong\u003eblack\u003c\/strong\u003e to match the rifle. Its vertical profile is dimensioned for a standard sight picture, so no additional sight adjustments are required beyond seating the post and securing the detent spring.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eBuilt by Hiviz as part of their tritium AR sight line, the ARN101 is a simple, reliable way to add nighttime aiming capability to any AR-platform rifle already wearing a compatible front sight tower.\u003c\/span\u003e\u003c\/p\u003e","brand":"Hiviz","offers":[{"title":"Default Title","offer_id":55315352355138,"sku":"ARN101","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/alt_2e41ca1c-ba0a-4896-b4ea-6e4b7e6de35e.jpg?v=1785138260","url":"https:\/\/centerfiresystems.com\/products\/hiviz-arn101-ar-vertical-tritium-front-sight-black-post-for-ar-15-m4","provider":"Centerfire Systems","version":"1.0","type":"link"}