{"product_id":"firefield-ff39012-in-chamber-243-308-7-62x51mm-red-laser-brass-boresighter","title":"Firefield FF39012 In-Chamber 243\/308\/7.62x51mm Red Laser Brass Boresighter","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eFirefield FF39012 In-Chamber\u003c\/span\u003e\u003c\/strong\u003e is a \u003cstrong\u003ebrass-bodied\u003c\/strong\u003e laser boresighter built for \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e.243 Winchester, .308 Winchester, and 7.62x51mm NATO\u003c\/span\u003e\u003c\/strong\u003e rifles. Drop the unit directly into the chamber, close the bolt on your empty firearm, and it projects a sharp \u003cstrong\u003ered laser dot\u003c\/strong\u003e at the theoretical point of impact - letting you zero scopes and red dots without burning through a box of live ammunition.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe brass housing is machined to the same dimensions as a live cartridge case, so the boresighter self-centers in the bore and stays put while you make adjustments at the range. The laser emits at a \u003cstrong\u003e632-650 nm wavelength\u003c\/strong\u003e with a \u003cstrong\u003e2 MOA dot at 100 yards\u003c\/strong\u003e, giving you a precise aiming reference for sighting in bolt-action and semi-auto rifles alike. Power comes from a single \u003cstrong\u003eAG5 button-cell battery\u003c\/strong\u003e rated for approximately \u003cstrong\u003e1 hour\u003c\/strong\u003e of continuous run time, and the unit is rated for use in temperatures from \u003cstrong\u003e15 to 120 degrees F\u003c\/strong\u003e so it is ready for cold-morning range sessions and warm summer afternoons.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eCompact enough to live in a range bag or ammo box, the FF39012 is a fast, no-ammo way to get on paper. Whether you are mounting a new hunting scope, aligning a tactical red dot, or setting up iron sights, this in-chamber boresighter saves time, saves ammo, and gets you shooting sooner.\u003c\/span\u003e\u003c\/p\u003e","brand":"Firefield","offers":[{"title":"Default Title","offer_id":55063366467906,"sku":"187223","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_a723ec6f-2721-4c48-b010-93bd11edd584.png?v=1784734964","url":"https:\/\/centerfiresystems.com\/products\/firefield-ff39012-in-chamber-243-308-7-62x51mm-red-laser-brass-boresighter","provider":"Centerfire Systems","version":"1.0","type":"link"}