Forward Controls Design CN5F A5 Castle Nut, Black

CN5F castle nut for Vltor A5 system The CN5F castle nut, an advanced iteration of our original CNF model, is meticulously engineered to complement the exceptional Vltor A5 system. Since its inception in 2018, the CNF has set a standard for reliability and performance and the CN5F builds upon this legacy with precision enhancements tailored for the Vltor A5 system. Extended design - the CN5F is crafted to be 0.1 inches longer than its predecessor, maximizing coverage of the threaded area on a receiver extension (RE) without compromising backward compatibility. This thoughtful extension ensures that even the longest carbine stocks can fully collapse on both the Vltor RE-A5 and our RE5F. Compatibility Considerations - while the CN5F is optimized for the Vltor A5 system, it maintains functionality with standard TDP spec length REs. However, users should note that the additional length may prevent full stock collapse on these standard REs. Enhanced Staking notches - addressing common feedback, the CN5F features longer and deeper staking notches. This design choice reinforces the nut's stability once installed and staked, ensuring it remains secure unless intentionally adjusted by the user. User-friendly installation - the CN5F eliminates the discomfort associated with traditional wrench notches, which often serve as unintended serrations. This improvement enhances the installation experience, aligning with our philosophy that certain components of an AR should remain steadfastly in place. Superior Material and finish - billet machined from 4140 PH steel and finished with a black nitride coating, the CN5F exemplifies durability and corrosion resistance. As with all Forward Controls Design products, it is proudly manufactured in the USA, reflecting our commitment to quality and craftsmanship. The CN5F castle nut is not just an accessory - it is a testament to our dedication to continuous improvement and innovation in firearm components. Whether you're upgrading your Vltor A5 system or seeking a robust solution for your AR-platform, the CN5F delivers unmatched performance and reliability.