U/m 115 B Base Screws

The Uncle Mike's U/M 115 B Base Screws are a complete hardware assembly designed for quick-detach swivel attachment on firearms with Weaver or Picatinny rail systems. This set includes a standard QD 7/8" machine screw base, matching nut, and 3/4" rear wood screw base with white spacers—providing everything needed to install a sling swivel on both modern tactical rifles and traditional wood-furniture firearms.

Uncle Mike's manufactures this component to mil-spec tolerances, ensuring precise fitment and reliable retention under field conditions. The included white spacers serve a critical function: they maintain proper clearance and distribute clamping pressure evenly across wood stocks or rail interfaces, preventing overtightening damage and uneven wear. The dual-base configuration accommodates both wood and synthetic stocks, making this kit suitable for hunters transitioning between different rifle platforms or tactical operators maintaining versatile loadouts. The 7/8" QD base measurement is industry standard for Uncle Mike's Magnum band swivel systems, ensuring compatibility with aftermarket sling hardware designed to this specification.

This product is purpose-built for shooters who require reliable sling attachment hardware. Whether upgrading a hunting rifle for precision shooting, setting up a patrol rifle with consistent sling management, or building out a precision rifle platform, having verified hardware components eliminates guesswork during assembly. Users conducting field maintenance appreciate the clear separation of machine screw and wood screw bases, which prevents confusion during installation and ensures the correct fastening method is used for each stock type.

Uncle Mike's maintains a strong reputation for accessory hardware reliability across law enforcement and civilian shooting communities. Their swivel systems are recognized for consistent geometry and durability, making replacement and upgrade components like this assembly a trusted choice for maintaining existing platforms or building new ones with proven component compatibility.