This set of 4 Hex Drive screws is specifically engineered for mounting popular optics like Holosun 407K, 507K, and EPS/EPS Carry onto compatible firearms, including Smith & Wesson Equalizer, M&P 5.7, Shield, and Shield Plus. The screws feature a 6-32 thread and 1/2" (12.7 mm) length, ideal for RMSc and similar optics footprints, ensuring a perfect fit without the need for additional adapter plates. The Hex Drive head design offers superior tool engagement, reducing the likelihood of stripping during installation or removal. Made from high-strength steel with a corrosion-resistant coating, these screws are built to last in demanding conditions. Whether you're upgrading your optics or keeping spares for future adjustments, this set provides a reliable solution. Compatibility: Smith & Wesson Equalizer M&P 5.7 Shield / Shield Plus Holosun 407K / 507K / EPS / EPS Carry RMSc and similar optics footprints Usage Instructions: Clean the mounting surface and screws before installation to ensure optimal fit. Use a torque driver with a Hex bit for precise tightening (recommended torque: 12-15 in-lbs). Apply a medium-strength threadlocker (e.g., Loctite Blue) to prevent loosening under recoil. Why Choose This Set? Versatility: Fits multiple firearm and optic models without the need for additional modifications. Durability: Resistant to wear and corrosion, making it ideal for long-term use. Ease of Use: Hex Drive head simplifies installation and removal, even for beginners. Value: Includes 4 screws, ensuring you always have spares for emergencies or future upgrades. Upgrade your firearm setup confidently with this reliable, precision-engineered screw set, designed to meet the needs of professional shooters and enthusiasts alike.