I’ve been running an ACOG ScopeFly on top of my AR for the last few months, and I have to say, it’s an excellent little product. If you’ve run an ACOG-equipped rifle, you’re already probably aware of and annoyed by just how effective the scope’s light-gathering ability can be. Under direct sunlight, the reticle can have a tendency to bloom, or glow so brightly that it can be hard to use with precision.
A lot of shooters deal with this problem with the field-expedient measure of sticking a piece of tape across the top of the light-gathering fiber-optic or wrapping their scope with a rubber bicycle tire inner tube. While these methods work, they have their problems (tape falls off, the inner tube is not quickly adjustable).
Enter the ScopeFly, a product available from 3Gun Stuff. Basically, it’s a couple of pieces of nylon fabric and a zipper that are held on to your scope via the use of adhesive velcro strips. The result is a product that allows you to quickly and precisely adjust the amount of light reaching your reticle. It’s a handy device.
A quick disclaimer: I am friends with the owner of 3Gun Stuff and have done some work for him. So take that as you like. He’s a stand-up guy with some neat products available.