Re: Elcan m145 vs acog?
While it will work...that's a giant piece of glass dude haha Is it functional? Oh yes! It's a pretty damn tough optic! But so is the ACOG. And the ACOG doesn't look retardedly huge on an M4. But I'm assuming you're getting the "friend" deal, so it might be worth it to save some bucks.
Only you can decide if the juice is worth the squeeze.