The AC-4222/4322 is an attachment for daytime weapon sights with 1x to 6x magnification that converts the sight into a high quality night vision weapon sight. The AC-4222/4322 mounts in front of a daytime sight. Re-zeroing is not required. The device allows the use of all the features of your favorite daytime sight during the night. The IR illuminator could be mounted onto the optional Picatinny Rail. The AC-4222/4222 utilizes a Gen.2+ or Gen.3 Image Intensifier Tube. Transition from day to night shooting takes about 30 seconds without tools. The device has a built in automatic brightness control, which adjusts brightness to optimal level.

The AC-4275/4375 is a device which utilizes state-of the-art materials to reduce weight and improve recoil resistance. It has 4x magnification, a waterproof housing, Mil-Dot illuminated "cross-hair" reticle, high-grade multi-coated optics, and a low profile heavy-duty weaver mounting system. The sight could be assembled with a wide variety of Gen 2+ or 3 image intensifier tube to satisfy any level of performance. With guaranteed zero retention on heavy caliber weapons (including .50 BMG class), these are the systems of choice among military and law enforcement professionals, as well as hunters in many countries.