I was looking for the best optic for my .308 FN SCAR. I have four leupold Mark 4s, three EoTech EXPS3/2-0 units on other of my long guns but wanted to explore another option for the scar. I'm really glad I opened my eyes to the ACOG. I did replace the TA51 mount with a QD LT-104 so I could R&R the ACOG easy and allow clearance for the reciprocating charging handle on the SCAR. When I first mounted the ACOG and used a laser to do the initial siting I was amazed how close it was out of the box. The elevation and windage adjustments are crisp and done with fingers not tools. The fiber optic lighting means no battery worries and night time illumination is courtesy of tritium. This thing is rock solid and sleek. If you have never used an ACOG and have kept to the EoTechs don't be afraid to step up. The 3.5X magnification is great and the BAC versions can still be used with both eyes open. There are a lot of reticle types to choose from so figure out which one will work for your needs. I was impressed that even though it is magnified and I figured there might be some eye relief issues, it was more like a red dot than glass scope. I really like the 3.5X on the ACOG over the 3X multiplers for my EoTechs. Don't get me wrong I love all three of the Eotechs and the 4 Leupolds I own they have a place but for they way I intend to dress the SCAR the ACOG TA11E is sweet!
Pros: No eye relief issues, clean clear 3.5X view, easy to adjust, fiber optic and tritium illumination, durable
Cons: Expensive but value is never cheap
This review was written in the old system and had content requirements that are different than reviews written today.