One-piece trigger guard drops in to standard AR-15/M16 lower receivers to upgrade from the standard trigger guard. Gives ample space for shooting while wearing gloves, or for shooters with large hands. Single-piece design offers strength. Precise machining helps fitment. Includes mounting hardware. Mfg: Core Rifle Systems SPECS: 6061 T6 aluminum, matte black finish. 2.2″ (5.5cm) long. .63″ (1.6cm) wide.