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Geissele, a well-known brand in the world of firearms, has launched a new product: the Super Duty Build kit. This complete upper chambered in 5.56mm is composed of top-quality materials that are built to last. The Super Duty Build kit includes a Nanoweapon coated, Surefire Closed-Tine Flash Hider, which is mounted to a durable black oxide coated, Cold Hammer Forged, Chrome Lined, 1-7 twist Geissele barrel. This barrel is precision machined at Geissele's state-of-the-art facility located in North Wales, PA. The Geissele Length gas system and Geissele Super Compact Gas Block have bomb-proof installation and provides reliability and optimal performance in extreme conditions and heavy use.

The included MK16 Super Modular railmates with the upper receiver via a center aligning tab, removing any chance of rail rotation. This MK16 rail is a variant of the SMR MK16 currently fielded by USASOC and renowned by operators for their performance, comfort, and adaptability.

The Geissele REBCG (Reliability Enhanced Bolt Carrier Group) is the heart of this upper receiver group. This Nanoweapon coated BCG features a properly torqued and staked, chrome lined gas key. The Cam Pin is machined from advanced tool-steel, which is also coated with Nanoweapon for maximum corrosion and wear resistance. The REBCG comes with extended upper rails, providing greater stability and dramatically increasing feeding reliability. In addition, the REBCG comes with the Geissele Stressproof Bolt, which is manufactured from Carpenter 158+ steel. The Geissele Stressproof bolt is five times stronger and more fatigue-resistant than your average bolt. This bolt is forged, not machined from barstock, which optimizes the grain structure of the steel. Each bolt is rigorously inspected, high-pressure tested, mag particle inspected and nanocoated.

The Geissele Ultra Duty Lower Parts Kit is designed for the most demanding operators and includes all the internal parts necessary to complete or rebuild your lower receiver. This top-tier LPK features proprietary Geissele designs, machined with great care at their facility located in North Wales, PA. Key components are made from Stainless Steel, which offers a much longer lifespan and a much lower chance of rusting or failing in extreme conditions or under heavy use. The takedown pins and mag release button feature the same “tank treading” as the Maritime Bolt Catch, giving your rifle a tasteful and cohesive look. The Maritime Bolt Catch is famous for its aggressive texturing and extended paddles, and the Ambidextrous Super Configurable Safety features the ability to easily and securely swap and exchange the safety levers.

The Geissele Premium Mil-Spec Buffer Tube is machined from quality 7075-T6 Aluminum and finished in Type 3 Hardcoat Anodize. This rigid and durable buffer tube conforms to all mil-spec standards and features six preset stock positions. This carbine length, mil-spec diameter Premium Buffer Tube is the perfect fit for your AR-15 lower. It includes a high quality, Mil-Spec castle nut and end plate.

The Geissele Super 42 Buffer Spring and Buffer Combo was designed to improve the function and reliability of the AR-15 pattern rifle. Its unique spring design uses three independent strands of wire, just like the famous German MG42 Machine Gun. This concept acts as a harmonic dampener and energy absorber by allowing the strands to flex separately from each other. The Super 42 Spring has a 15% stronger average return force than the standard buffer spring. This will assist in stripping rounds out of the magazine when operating with a dirty weapon or when using steel-case ammo.

The B5 stock is a reinforced polymer stock that fits AR-15/M4-type receiver extensions and offers an improved cheek weld for increased comfort and consistency. Two waterproof storage compartments running the length of the stock hold 2 AA or 3 CR-123 batteries. Streamlined contours resist snagging on clothing, equipment, or vegetation to aid in safe and stealthy operation. A Sure-Grip stock latch ensures convenient and intuitive length-of-pull adjustment, while the anti-slip rubber recoil pad secures the weapon to the operator’s shoulder. It features a stainless-steel QD swivel mount and two molded 1¼" wide sling slots.

The Geissele A22 Grip is a modern take on a classic grip angle for the AR15/M4 platform. It features attractive anti-slip texturing and a thicker palm swell to assist with easily attaining a high-and-tight hold. The Super Duty Build Kit is a high-quality product that features top-of-the-line components that are designed to last.