ArmaLaser Colt Mustang XSP Laser Sights Red. The TR series laser is the most technologically-advanced laser sight available for this popular pistol. Only fits XSP/Lite Polymer frame (not Pocketlite model) Specifications for ArmaLaser Colt Mustang XSP Laser Sights: Manufacturer: ArmaLaser Color: Black Laser Output: 4 mW Wavelength: 5 nm Maximum Range: 50 ft Battery Type: 357 CR1/3N Lithium Battery Quantity: 2 Gun Make: Colt Gun Model: Colt Mustang Length: 4 in Width: 1 in Height: 5 in Weight: 0.15 oz Fabric/Material: Zytel FRN Polymer Condition: New Mount Type: Trigger Guard Mount Features of ArmaLaser Colt Mustang XSP Laser Sights: TR17 fits COLT Mustang Lite (380 ACP) Mustang XSP Grip-Touch Activation Ultra-bright laser Master On/Off switch Dot Visibility: 0.5in at 50 feet Battery Life: Up to 2.3 hours Material: DuPont Zytel FRN Polymer Black Laser adjustment: Windage & elevation Beam modes: Steady & Pulsing Package Contents: ArmaLaser Colt Mustang XSP Laser Sights What firearm models does the manufacturer say ArmaLaser Colt Mustang XSP Laser Sights is compatible with? The manufacturer says that ArmaLaser Colt Mustang XSP Laser Sights is compatible with Colt MustangArmaLaser TR17: Colt Mustang XSP Laser Sights Red