The 13.5" Super Modular Rail MK16 M-LOK® in Black from Geissele Automatics is built like a tank but handles like a racecar, delivering rock-solid performance for your AR-15 while keeping things sleek and streamlined. Machined from ultra-strong 7000 Series Aluminum and finished in rugged Type 3 Hardcoat Anodize, this rail is ready to withstand the toughest conditions without weighing you down.
Its 13.5" length hits the sweet spot between control and coverage, giving you room for all the gear you need without overloading your setup. M-LOK slots on all four sides make accessory mounting a breeze, while the full-length Picatinny top rail is perfect for optics, lights, or whatever mission demands. Anti-rotation tabs, set screws, and the proven Geissele Barrel Nut lock everything down tight, so your rail stays rock steady when it counts. Whether you're building a duty rifle or dialing in your dream AR, the MK16 brings premium engineering, tactical versatility, and hard-hitting style to the table.
Length: 13.5"
Color: Black
Material: 7000 Series Aluminum
Finish: Type 3 Hardcoat Anodize
Height: 2.39"
Inner Diameter: 1.26"
Outer Diameter (DAQ): 1.59"
Weight: 13.4 oz (14.9 oz with barrel nut)
Mounting System: M-LOK® on all four quadrants
Top Rail: Full-length M1913 Picatinny
Attachment Method: Geissele Barrel Nut with anti-rotation tabs and set screws
Compatibility: Mil-Spec AR-15 upper receivers
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