{"product_id":"geissele-automatics-05314-reaction-block-black-steel-armorers-tool-ar-15-m4-m16","title":"Geissele Automatics 05314 Reaction Block Black Steel Armorer's Tool - AR-15\/M4\/M16","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eGeissele Automatics 05314 Reaction Block\u003c\/span\u003e\u003c\/strong\u003e is a professional-grade \u003cstrong\u003earmorer's tool\u003c\/strong\u003e purpose-built for the assembly, maintenance, and gunsmithing of \u003cstrong\u003eAR-15, M4, and M16\u003c\/strong\u003e lower receivers. Machined from \u003cstrong\u003esteel\u003c\/strong\u003e and finished in \u003cstrong\u003eblack\u003c\/strong\u003e, this reaction block provides the ultra-stable platform needed to perform a wide range of lower receiver operations with confidence.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eOnce the armorer has installed the buffer tube, the lower receiver indexes securely on the Reaction Block in \u003cstrong\u003eone of three positions\u003c\/strong\u003e, giving easy and precise access to the \u003cstrong\u003etrigger\u003c\/strong\u003e, \u003cstrong\u003emagazine catch\u003c\/strong\u003e, and other internal components at both the \u003cstrong\u003e6 and 9 o'clock\u003c\/strong\u003e positions. This makes installing trigger groups, springs, detents, and pins dramatically easier compared to free-handing a stripped lower.\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDesigned and built by \u003cstrong\u003eGeissele Automatics\u003c\/strong\u003e to the same quality standard the company is known for across its triggers, rails, and small parts, the Reaction Block measures approximately \u003cstrong\u003e8.2 in long by 3.1 in tall\u003c\/strong\u003e, fits any standard \u003cstrong\u003eAR-15\/M4\/M16 pattern lower receiver\u003c\/strong\u003e, and is an essential bench tool for armorers, gunsmiths, and home builders alike.\u003c\/span\u003e\u003c\/p\u003e","brand":"Geissele Automatics","offers":[{"title":"Default Title","offer_id":54991896969538,"sku":"37439","price":183.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_ca525854-0b0b-4ba5-9a9c-76b1f17e4c0e.png?v=1784231179","url":"https:\/\/centerfiresystems.com\/products\/geissele-automatics-05314-reaction-block-black-steel-armorers-tool-ar-15-m4-m16","provider":"Centerfire Systems","version":"1.0","type":"link"}