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Geissele Ar-15 Super Duty Sd556 5.56 Nato Semi Auto Rifle 16″ Barrel No Magazine Free Float 15″ Smr Mk16 Hand Guard B5 Sopmod

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Bill Geissele MK16 uses proprietary barrel nuts, and includes a couple heavy-duty cross-bolts that secure the MK16 to the barrel nuts. This is fitted on a Geissele-machined Super Duty upper, and a noteworthy detail in fit is that Bill Geissele uses a centered-alignment-tab system to keep handguard torque at bay. In the upper, Geissele installed his custom-made cold-hammer-forged barrel, which is chrome lined, phosphate coated with manganese, and sports the correct 5.56 NATO throat. A SureFire SF3P flash hider is a QD mount for SureFire suppressors * An outstanding Bill Geissele SSA-E X trigger sits inside an enlarged trigger guard, allowing for greater access * A braided buffer spring is another reliability-enhancing feature * Optics mounting is easy with a full-length Picatinny top rail * Each Geissele bolt carrier is stress-relieved by a shot-peening process * A generous size, the Airborne charging handle allows you to charge the Super Duty with either hand, while serrated levers allow for added purchase.

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