Performs accurization of national match weapons (pistols, rifles, and light machine guns) on a limited basis. Accurization involves altering and refining mass-produced weapons for use in national competition, by increasing their accuracy and reliability beyond factory specifications. This process involves selecting, fitting, and altering parts to improve the weapon. Altering includes peening, bending, filing, grinding, and the use of lapping compound to alter parts such as individual slide, receiver, sear, disconnector, barrel, barrel bushing, magazine, hammer, recoil spring, flash suppressor, operating rod spring guide, gas cylinder, stock, and the spindle valve.
Disassembles weapons, assemblies, subassemblies and other components. Examines for defects, misalignment and malfunctions. Replaces barrels, firing pins, springs, trigger mechanisms, shell ejectors, and other parts and assemblies. Modifies small weapons by replacing worn or obsolete parts and using hand and power tools, precision gauges, test instruments, jigs and alignment devices in making repairs, modifications, and adjustments. Applies final finishes and test fires and/or performs operational checks of arms repaired to ensure safety, accuracy, and ease of operation. Performs overhaul, maintenance, and repair on a variety of small arms. Diagnoses and identifies mechanical deficiencies and/or malfunctions in weapons including: automatic pistols, revolvers, shotguns, automatic rifles, grenade launchers, machine guns, and rocket launchers, and other small arms and accessories. Uses micrometer to measure altered tolerances and makes additional adjustments as required. Anneals certain parts until the proper temper of the metal is obtained. Selects certain parts of specific hardness by researching characteristics of various metals in technical manuals. Uses pre-set specifications to ensure that critical operating tolerances are met. Test fires weapons to ensure that they meet desired performance requirements. Is responsible for accountability, storage and security of arms and other sensitive items while they are kept for repair, usually in vaults with limited access. May serve as a commodity inspector during Command Maintenance Management evaluations (COMET) or as a member of a Maintenance Assistance Instruction Team (MAIT). Performs other duties as assigned.