One of the most popular upgrades for mil-spec AR-15s and similarly outfitted AR .308 rifles is an enhanced safety selector. Since this lever allows the gun to fire and makes it safe, it's critical that this control receives positive engagement when needed, and the Armaspec SFT 45/90 Ambidextrous Safety Selector is built to allow for easy activation when needed. The design of the Armaspec SFT 45/90 safety selector allows users to choose between a 45- or a 90-degree safety throw, whichever better meets their needs. The selector provides a crisp, smooth transition from fire to safe and back again. Torx screws are used for installation, and the screws and key needed for the install are included. The levers used on the Armaspec SFT 45/90 selector are machined from aluminum, while the core that threads through the receiver is made from hardened steel. The entire unit is made in the USA and is covered by the company's lifetime warranty.