The Phase 5 90-degree ambidextrous safety selector is designed for use with AR-15 and AR-10 / LR-308 platforms, offering enhanced versatility and control. The SAFE-90 selector is fully interchangeable, allowing it to be easily configured for both right- and left-handed shooters, ensuring a custom-fit for any operator. For optimal performance and secure installation, we highly recommend applying a small drop of semi-permanent "BLUE" Loctite when installing the levers. This safety selector delivers reliable, smooth operation, making it an excellent choice for those seeking a high-quality upgrade for their firearm.