Stern Defense 8.50" Classic Upper 9mm 1:10 Free Float M-LOK Rail, Black

The free float M-LOK handguard from Stern Defense combines lightweight construction with exceptional durability, delivering superior ergonomics for any shooter. Designed to accommodate your favorite attachments, this M-LOK compatible handguard ensures versatility without sacrificing strength. A secure clamp-on mounting system keeps it firmly in place, even under the stress of heavy use, sustained full-auto fire or shooting prone from a bipod. Constructed from 6061 aircraft-grade aluminum and hard-coat anodized for longevity, it also features integrated quick-disconnect swivel holes for enhanced functionality. For those looking to build a custom dedicated 9mm AR-15 upper, Stern 9mm barrels provide a distinct advantage over the competition. Engineered with a deeper throat and longer free bore, these barrels accommodate bullets with a longer ogive, eliminating issues where some defensive rounds jam into the rifling before fully chambering. By addressing this common problem, Stern Defense barrels prevent malfunctions that could leave a round stuck in the chamber and require manual clearing. The Mil-Spec flat top upper receiver includes a Stern Defense laser-engraved dust cover and forward assist. Precision-machined from 7075-T6 aluminum, hard-coat anodized for durability and finished with Mil-Spec dry film lube in the bore, this receiver is built for reliability. A Mil-Spec AR-15 charging handle, laser-engraved with the Stern Defense logo, enhances ease of use with an ergonomically designed latch that ensures a secure grip for effortless one-handed manipulations in high-pressure situations. The Stern Defense bolt assembly is built from 8620 AISI steel with a Mag-Phosphate finish, providing seamless compatibility with Mil-Spec and Glock-pattern upper receivers. Designed to function with both Colt SMG and Glock magazines, this bolt works flawlessly with standard AR-15/M16 charging handles. It arrives fully assembled with all sub-components, including a firing pin, spring, retaining pin, extractor, extractor spring and proprietary center and roll pins, ensuring smooth and consistent operation. Completing this build is a uniquely designed blast can, engineered for shooters who want to redirect muzzle gases and blast away from themselves while maintaining a streamlined aesthetic. Machined from 6061 aircraft-grade aluminum billet and hardcoat anodized, this blast can seamlessly integrates with the handguard, measuring 3.25 inches in length and 1.30 inches across its widest point. Every component in this package is crafted for peak performance, durability and reliability, making it the ultimate upgrade for any firearm enthusiast. Hard coat anodized 6061 aircraft-grade aluminum handguard offers exceptional durability and corrosion-resistance The sturdy handguard is built to withstand tough conditions while maintaining lightweight functionality A lightweight handguard offers durability while maintaining maneuverability A 10 inches handguard offers compact versatility for various firearm builds The smallest inside diameter of the handguard measures 1.435 inches, ensuring a precise fit Barrel length is measured in overall length from breech to muzzle, ensuring compliance with legal and performance standards 8-1/2 inches barrel optimizes compactness and maneuverability without sacrificing accuracy The barrel is threaded at 1/2-36 for compatibility with a variety of muzzle accessories A 1:10 twist rate stabilizes a wide range of bullet weights, optimizing accuracy and ballistic performance The Melonite coating offers superior durability and corrosion-resistance, significantly enhancing the longevity and performance of the barrel by providing a hard, protective surface The sturdy construction is achieved with hard coat anodized 7075-T6 aluminum for a highly durable receiver A laser-engraved charging handle enhances grip and durability The sturdy construction utilizes hard coat anodized 6061 aircraft-grade aluminum for a robust and durable charging handle Manufactured using 8620 AISI steel for a strong and resilient bolt The custom 4140 billet extractor ensures superior ejection performance Glock cut ensures compatibility with Glock-style slides The mag-phosphate coating on the bolt provides superior corrosion-resistance, ensuring long lasting durability and performance, even in harsh environments A 15.50 oz bolt delivers durability and smooth cycling for consistent and reliable function The sturdy construction incorporates hard coat anodized 6061 aircraft-grade aluminum for a resilient blast can Lightweight construction ensures the blast can provides effective performance without adding bulk Manufactured in the USA with precision and care for superior reliability