Yeah just google TA31 eye relief and you'll see.
The TA33 is 1x less mag but is also a BAC optic that can have a calibrated BDC reticle in it like the TA31. It also has several inches of eye relief. Look at the RMR option to add one to the rear 'ring' for a RDS on the gun.
If you've never used an ACOG before, there's a bit of a learning curve with keeping both eyes open and switching targets while still looking through the optic rather than moving your head, finding the target and having to start all over again.
The TA33 I have on one of my carbines has been everything short of dropped off a cliff, its ugly, but its never had any issues.