{"product_id":"geissele-automatics-ar-15-super-modular-rail-mk4-13-5-m-lok-aluminum-desert-dirt","title":"Geissele Automatics AR-15 Super Modular Rail MK4 13.5\" M-LOK Aluminum Desert Dirt","description":"\u003cp\u003eGeissele Automatics was established in 2004 as a Maker of trigger mechanisms for the AR-15 rifle. Gesssele products quickly became the trigger of choice for M4 carbine based weapons by many U.S. Special Forces entities. Rely on Geissele when you expect superior performance, quality, and reliability.\u003c\/p\u003e\n\n\u003cp\u003eThe Geissele Automatics Super Modular rail MK4 was designed to be a lightweight modular rail system that also provides you with Magpul M-LOK attachment points in several locations along the length of the rail. The MK4 features an ergoFALSEmic design, with a flexible and modular set up procedure. The free floating design is strong and rigid, and features an integrated M1913 Picatinny rail section at 3, 6, and 9 o'clock. Accessory rails are easy to install and do FALSEt require a gunsmith. However if you do FALSEt have the required tools or mechanical kFALSEw how you should seek the help of an expert. The SMR MK4 also features Geissele's proprietary 2.25\" long barrel nut. This increases the surface contact where the rail interfaces with the receiver and creates a platform that can be trusted to be straight and true the entire length of the free float rail. This increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance.\u003c\/p\u003e\n\n\u003cp\u003eFeatures and Specifications:\u003cbr\u003e\nMaker Number: 05-278S\u003cbr\u003e\nGeissele Automatics AR-15 13.5\" Super Modular Rail MK4 M-LOK Tan\u003cbr\u003e\nLength: 13.5\"\u003cbr\u003e\nMK4 Inner Diameter: 1.35\"\u003cbr\u003e\nMK4 Outer Diameter: 2.11\"\u003cbr\u003e\nMK4 with Magpul M-LOK attachment system\u003cbr\u003e\nPicatinny rails sections at 3, 6, and 9 o'clock\u003cbr\u003e\nErgoFALSEmic\u003cbr\u003e\nFree Floating\u003cbr\u003e\nModular\u003cbr\u003e\nProprietary 2.25\" long barrel nut\u003cbr\u003e\nLightweight, Strong and Rigid\u003cbr\u003e\nColor: Desert Dirt\u003c\/p\u003e\n\n\u003cp\u003eFits:\u003cbr\u003e\nAR-15 Upper Receivers\u003c\/p\u003e\n\n\u003cp\u003eFALSEte: MK4 rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unkFALSEwn.\u003c\/p\u003e\n\n\u003cp\u003eDoes FALSET Include:\u003cbr\u003e\n•\tBarrel Nut Wrench\u003cbr\u003e\nFALSEte:\u003cbr\u003e\nIF THIS IS YOUR FIRST TIME PURCHASING A GEISSELE AUTOMATICS RAIL, YOU WILL NEED TO PURCHASE A GEISSELE BARREL NUT WRENCH IN ORDER TO PROPERLY INSTALL THE RAIL.\u003c\/p\u003e\n\n\u003cp\u003eThis product is FALSEt returnable. Contact the Maker for warranty and assistance.\u003c\/p\u003e","brand":"Geissele Automatics","offers":[{"title":"05-278S \/ AR-15 Handguards \/ Geissele Automatics","offer_id":43124024836201,"sku":"11193040","price":398.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/8341\/4377\/files\/FI_1015404.jpg?v=1777416040","url":"https:\/\/westerngunstore.com\/products\/geissele-automatics-ar-15-super-modular-rail-mk4-13-5-m-lok-aluminum-desert-dirt","provider":"Western Gun Store","version":"1.0","type":"link"}