SureFire M600AA Scout Light Weapon Light

I have been using a Surefire X300U on my carbine for a few years now but it has some drawbacks. It is bulky, the battery compartment latch is fragile, it's easy to activate unintentionally and it's BRIGHT all the time. The M600IB solves all of these issues. The IB has a larger bezel than the X300U but overall it is lower profile. I purchased an M600 Scout body and an inline scout mount from Arisaka Defense and it really pulled the IB in close to my MI Gen3 handguard. There is just enough clearance to be able to remove the head and replace batteries. Although I had to move my MBUS front sight back about an inch, I highly recommend this mount setup. Scout lights have a reputation for durability and I see nothing that would make me believe the IB is any different. Only time will tell. The tailcap switch is large and easy to activate but not too easy. There is a generous amount of travel before the button clicks to constant on making momentary operation a snap. So now the best part, intellibeam. This thing adjusts brightness FAST! I had to move the beam from close to distant objects quickly several times to catch it working. The light comes on in the dimmest setting then brightens as your surroundings dictate. In my bedroom with light colored walls and white ceilings the IB is bright but not overly so. It does not wash out my red dot sight which the X300U does. Outside at night this thing is a beast, with clear targeting out to an estimated 150 yards and objects visible much further. Bonus round...the adjustable beam saves energy thus batteries may last longer than in the X300U. IMHO this light/mount setup is ideal for a tactical/hunting carbine.