Stern Defense 16.10" Classic Upper 9mm 1:10 Free Float M-LOK Rail, Black

The free float M-LOK handguard from Stern Defense delivers exceptional ergonomics, combining strength with a lightweight design for superior performance. Engineered to be M-LOK compatible, it provides a secure platform for your favorite attachments, enhancing both functionality and customization. Featuring a reliable clamp-on mounting system, this handguard stays firmly in place even under extreme conditions, including sustained full-auto fire and prone shooting with a bipod. Constructed from 6061 aircraft-grade aluminum and finished with a hard-coat anodization, it offers long-lasting durability and resilience. Additional quick disconnect swivel holes provide enhanced versatility for sling attachments. Stern 9mm barrels are designed for firearm enthusiasts looking to build a dedicated 9mm AR-15 upper group, offering a performance advantage over standard barrels. Every Stern Defense barrel throat is precision-machined with a deeper free bore to accommodate bullets with a longer ogive. This innovative design prevents common defensive rounds from jamming into the rifling before full chambering, eliminating potential malfunctions that could leave a round stuck and requiring manual clearing. The Mil-Spec flat top upper receiver is crafted for durability and reliability, featuring a Stern Defense laser-engraved dust cover and forward assist. Precision-machined from 7075-T6 aluminum and hard-coat anodized, it is further enhanced with a Mil-Spec dry film lube in the bore for smooth operation. The Mil-Spec AR-15 charging handle, laser-engraved with the Stern Defense logo, features an ergonomic latch for a positive grip, ensuring effortless one-handed manipulations even in high-pressure situations. The Stern Defense bolt assembly, built from 8620 AISI steel with a Mag-Phosphate finish, is fully compatible with Mil-Spec and Glock-pattern upper receivers. Engineered to function with both Colt SMG and Glock magazines, this bolt works seamlessly 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 performance. Designed for peak efficiency, the compensator has been rigorously full-auto tested to minimize muzzle rise and maximize recoil control. Twin chamber ports ensure optimal gas utilization, delivering superior stability with every shot. Machined from U.S. Mil-Spec AISI 4140 steel and coated with black nitride, this compensator is built to withstand a lifetime of heavy use. Stern Defense components represent the pinnacle of American craftsmanship, providing shooters with a rugged, high-performance system built to endure the harshest conditions. 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 15 inches handguard provides extended coverage for stability and accessory mounting 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 The 16.1 inches barrel balances maneuverability and velocity, making it suitable for a variety of shooting applications 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 Tested for full-auto performance to ensure durability under extreme conditions The sturdy construction features a black nitride-coating on a US Mil-Spec AISI 4140 steel blast can for long lasting durability Manufactured in the USA with precision and care for superior reliability