The Trijicon ACOG has been around for a long time, it has proven to be one of the most durable magnified optics to hit the market 
T.REX Newsletter

The Trijicon ACOG has been around for a long time, it has proven to be one of the most durable magnified optics to hit the market, and it is one of our favorites. The battery-powered ACOG is a great option for someone who wants a bit more control over the reticle's brightness. We are now carrying both the chevron and crosshair style reticles of the TA02.

One of the most iconic and useful things you can do to an ACOG is mount a Trijicon RMR on top. This is an excellent solution for those who want something non-magnified for up-close shooting. We now sell an option for both the battery-powered ACOG and the fiber optic ACOG.

Although the stock mount that comes on the ACOG works great, you may want something that allows you to take the optic on and off quickly. The Trijicon ACOG QD mount is an ideal option for this.