The Geissele Automatics MK14, Super Modular Rail, Handguard, 13.5, M-LOK, Barrel Nut Wrench Sold Separately (GEI-02-243), Gas Block Not Included, Desert Dirt Color, Product Finishes, Shade Variations, and Other Imperfections Are Normal Due to the Manufacturing Process 05-573S is a top-of-the-line rail system designed for optimal performance. Made by Geissele Automatics, a trusted and renowned brand in the firearms industry. This rail system is specifically designed for use with AR-15 rifles, providing a sturdy and lightweight platform for attachments. With precision machining and a sleek DDC finish, this rail system is not only durable but also aesthetically pleasing. The M-LOK® feature allows for easy and secure accessory attachment, ensuring versatility and customization options. Shop now for the Geissele Automatics MK14, Super Modular Rail, Handguard, 13.5, M-LOK, Barrel Nut Wrench Sold Separately (GEI-02-243), Gas Block Not Included, Desert Dirt Color, Product Finishes, Shade Variations, and Other Imperfections Are Normal Due to the Manufacturing Process 05-573S and enhance your shooting experience.