Abstract: Accessory mounting rails having locating and clamping elements can be secured to the lower frame of a composite-framed pistol with uniform clamping force to prevent distortion of the lower frame and improve firearm operational reliability. Standard or custom accessory-mounting features may be provided in one or more locations above, below, and to the right and left sides of the pistol's barrel, allowing a number of accessories to be installed and operated together.
Abstract: An ambidextrous charging handle for a semi-automatic rifle comprises left and right handles, a mechanism for securing the charging handle to the rifle when not in use, and at least one roller bearing positioned to facilitate smooth operation of the securing mechanism. Friction-reducing features may be provided to improve the sliding operation of the charging handle. Construction using aluminum or titanium permits the use of anodizing to improve surface toughness.