The Springfield TRP (Tactical Response Pistol) was developed to meet FBI HRT specifications, featuring an integral rail, match-grade barrel, aggressive frame checkering, and professional-grade fit and finish. Type: Semi-Auto Pistol Action: Single-Action Only Caliber: .45 ACP Capacity: 7 Year introduced: 1998, USA Weight: 42 oz Overall length: 8.6" Status: Active Intended use: Law Enforcement, Duty, Tactical