--- title: "Geissele Automatics MK4 10\" Desert Tan M-LOK Rail" description: "10\" Desert Tan AR-15 rail with M-LOK slots, integrated M1913 Picatinny sections, an elongated bottom rail, and extensive venting for reduced weight." canonical_url: "https://www.kygunco.com/product/geissele-mk4-federal-mk4-rail-desert-tan-mlok-ar-15-10" meta: author: KYGUNCO "og:description": "10\" Desert Tan AR-15 rail with M-LOK slots, integrated M1913 Picatinny sections, an elongated bottom rail, and extensive venting for reduced weight." "og:image": "https://cdn.kygunco.com/assets/products/256271/thumbnail.jpg?v=1718631431" "og:image:height": "500" "og:image:width": "500" "og:title": "Geissele Automatics MK4 10\" Desert Tan M-LOK Rail" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Stocks & Recoil Pads](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/stocks-and-recoil-pads) / GSS-05-430S ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/256271/main.jpg?v=1718631431) For illustration purposes only, this image may not be an exact representation of the product. # GEISSELE MK4 Federal MK4 Rail Desert Tan MLOK AR-15 10" The Geissele MK4 Federal Rail is a 10" Desert Tan AR-15 handguard with M-LOK slots at the 3, 6, and 9 o'clock positions and upper 45-degree quadrants. Integrated M1913 Picatinny rail sections provide attachment points, while the elongated bottom rail accommodates accessories and extensive venting helps reduce weight. See Price In Cart ** 5 interest-free payments of **$71.60** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) Pay over time with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 256271 Style GSS-05-430S UPC 817953027912 Condition New Manufacturer [Geissele Automatics](https://www.kygunco.com/brand/geissele) Weight 1 lb This is the same rail used to fulfill contracts for the Federal Bureau of Investigation (FBI). It's strength, modularity and M-Lok compatibility gives users the capabilities needed to successfully complete the mission at hand. These rails are purpose-built and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 o'clock positions. The Picatinny rail on the bottom of the rail, or the 6 o'clock position, is elongated in this version to more comfortably accommodate accessories. Maximum venting for heat dissipation also dramatically reduces the rails overall weight, while maintaining its same strong and rigid platform. The MK4 M-LOK rail features M-LOK slots at the 3, 6 and 9 o'clock positions as well as the upper 45-degree quadrants. This allows the user to keep the weight on the rail system down, while keeping the modularity and versatility to attach accessories as necessary. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Geissele Automatics ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/geissele-mk4-federal-mk4-rail-desert-tan-mlok-ar-15-10#webpage","@type":"WebPage","description":"10\" Desert Tan AR-15 rail with M-LOK slots, integrated M1913 Picatinny sections, an elongated bottom rail, and extensive venting for reduced weight.","name":"Geissele Automatics MK4 10\" Desert Tan M-LOK 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