DI OPTICAL 2016 Model FC1 W/Finger Torque Mount Red Dot The FC1, has the finger Torque mount, Block riser, 2000 Hour battery life (Turned on level 5). Used by the Korean Military in conjunction with 15 other countries. Fully waterproof and almost bombproof. One of the crucial smallest full-featured red-dots on planet earth. One of the crucial newest 2016 Militarized optics we carry will not disappoint. .-Used by Military and Law Enforcement all over the world-Multiple brightness settings and Night vision Compatable.-Brand New in Box (We have a bunch in stock). DI Optical’s new FC1 prism gunsight provides a parallax free reticle for increased accuracy and rapid target acquisition. The shaded 30mm lens provides a wide, crystal clear field of view. Made out of 6061-T6 aluminum, the compact FC1 is unsurpassed in ruggedness and reliability. The click-button tactile brightness switch may also be conveniently operated with a gloved hand. Model#: FC1Optic TypeParallax Free PrismEye ReliefUnlimitedOverall Dimensions (mm)48 x 34 x 40 (L x W x H)Dot Size1.5 MOAStorage Temperature Range-41 ~ +71C (-42 ~ 160F)Military Specification ConformityPassed MIL-STD810G Environmental TestingControl SwitchPush ButtonAdjustment Per Click1 MOALens Dimension (mm)17 x 23mm Night Vision CompatibleYesMagnification1XWeight119g / 4.2 OzBrightness Setting7 Daytime / 7 Midnight Operating Temperature-32 ~ 71C (-25.6 ~ 160F)MountMIL-STD 1913 RailExpected Battery LifeApprox. 2,000 Hours (When Brightness Level 5)Adjustment Range150 ClicksWaterproofIP65 Splash ResistantAuto Shut-Off Yes (30 Minutes). Built-in Motion SensorBattery Type1 x CR2032 We have the best return policy in the business. You run this thing over with a truck and we will be able to do a free return on it! “You don’t find it irresistible, You don’t pay for it”. No questions asked. As a favor to me, in case you have a feedback score under 10, please call me at (866-SLADE-ST, EXT 1) to say hello, and so I will verify that you’re a human. Thanks again!