Trijicon makes a wide variety of ACOG models, from the 1.5x compact model all the way up to the 6x DMR/GPMG model. And every model comes with a wide variety of reticles for 5.56x45mm, .300 Blk, 7.62x39mm, and 7.62x51mm. I believe the 1.5x and 2x compact ACOGs even have a more generic cross hair style reticle that have no BDC hashmarks better suited for close quarters shooting with a subgun or PCC, since those types of weapons aren't typically used for engaging targets at longer ranges, so compensating for bullet drop isn't a concern.
I've actually been considering getting either a 3.5x or 4x ACOG for my MWS308 and putting it on a quick change mount that will retain zero when removed and replaced so that I can swap the Aimpoint Comp M4 for it when I want magnification. I do have a second upper for it that has an Elcan Spectre TR scope that I plan on building up as a DMR with a 20" barrel for when I really want longer range, but I wouldn't mind being able to have magnification on the primary upper without the extra weight of a magnifier and having bullet drop compensation.