Crimson Trace Pistol Lasergrip Black - Colt Defender 1911 Style Pistols & Similar LG404. You won't have to change how you hold your weapon to activate these Red Laser Sights by Crimson Trace. Simply grip the weapon naturally to turn on the laser. The rugged polymer side panels and rubber overmold activation button make this quite a durable attachment. You get a bright 5mW red laser when activated that has user-adjusted windage and elevation. Best of all you get free batteries (2032 lithium) for life when you purchase these Crimson Trace LG-401 Front Activation Lasergrips. This is a grip replacement and comes factory sighted at 50 feet. For a comfortable grip that produces a powerful beam to assist your aim you can't go wrong with these Crimson Trace LG-401 1911 Lasergrips. Specifications for Crimson Trace Laser Sight for 1911 Pistols: Manufacturer: Crimson Trace Color: Black Beam Color: Red Laser Output: 5 mW Wavelength: 532 nm Maximum Range: 50 ft Reticle: Dot Water Resistance Level: Water Resistant Length: 3 in Width: 1 in Height: 1 in Weight: 4 oz Fabric/Material: Polymer/Rubber Combination Condition: New Features of Crimson Trace Laser Sight for 1911 Pistols CT-LS-DFBEAB: Activation Location: Front Activation Sighting: Factory Sighted at 50' Master On/Off Switch Yes Battery Type: Two #2032 Lithium Batteries Laser Battery Life: Over Four Hours Activation Mode: Pressure Activated Laser Visibility Approx .5 Inch Diameter at 50 Feet Wrench Size: 0.028 User Adjustable: Windage and Elevation Finish: Polymer Grip with Rubber Overmold Activation Pad Installation: User Installed Dot Size: Approx. 0.50" at 50' LG-404: Fits Colt (Officer's and Defender) Kimber (compact ultra-carry and ultra-elite) Para-Ordnance (compact single-stack) Springfield Armory (compact and ultra-compact) Wilson Combat and most other 1911's with grip screws measuring 2-11/16" apart. LG-401: Fits 1911 and 1991A1 full-size frames including: Auto-Ordnance Les Baer Colt Kimber Nighthawk Custom Olympic Arms Para-Ordnance (full-size single-stack) Safari Arms Sig Sauer Smith & Wesson Springfield Armory Taurus Dan Wesson Wilson and most other 1911's with grip screws measuring 3-1/16" apart. Package Contents: Crimson Trace Laser Sight for 1911 Pistols Full-Size NOTE: This product is not compatible with ambidextrous safety levers. What firearm models does the manufacturer say Crimson Trace Laser Sight for 1911 Pistols is compatible with? The manufacturer suggests that Crimson Trace Laser Sight for 1911 Pistols is compatible with 1911 Commander 1911 Government Colt 1911 OfficerCrimson Trace Pistol Lasergrip Black - Colt Defender 1911 Style Pistols & Similar LG404