Features: Caliber: 9mm Luger Mag. Capacity: 10 rds Barrel Length: 4.02in Weight Including COA without magazine: 21.16oz Weight: Including COA with empty magazine: 23.99oz Weight: Including COA with loaded magazine 30.51oz Trigger Pull: 5.8 lb Trigger Travel: 0.49in Barrel Profile: Hexagonal (GMB) Length of Twist: 9.84in Length: 7.28in Width (Overall): 1.34in Height Incl. Magazine & COA: 5.83in Sight Radius (Steel COA): 5.75in A-CUT Slide Aim Point COA: Operating Principle: Reflex collimator sight with LED Magnification: 1X - No Magnification Dot Size: 3.5 MOA * Dot Color: Red Light Source Wavelength: 650 nm red light NVD Compatible: Yes Operating Principle: Reflex collimator sight with LED Magnification: 1X - No Magnification Dot Size: 3.5 MOA * Dot Color: Red Light Source Wavelength: 650 nm red light NVD Compatible: Yes Optical Signature: No optical signature visible at 10 meter distance front side on appropriate settings with NVD Optical Coating: Anti-reflex coating all surfaces and multilayer coating objective lens Clear Aperture: 15 A- 15 mm / 0.59 A- 0.59 in Eye Relief: Unlimited Transmission: Minimum 80% in the range 425 - 610 nm *