The Citadel Pistol in 45ACP is designed for both combat and competition, combines the best accepted principles of strength, safety, accuracy, mechanical reliability, and ease of handling all to meet the most exacting standards of law enforcement, military, self defense, and competition shooting. All parts are made of high grade ordnance steel and heat treated for strength and durability. The lug contacts being the locking elements of the frame, slide, and barrel are precisely machined and heat treated providing accuracy, toughness, and rigidity in the locked firing position. The frame, slide, and other action parts are made by precision investment casting and CNC machined to equally consistent dimensions to ensure mechanical efficiency, long life, and complete parts interchangeability.