I brought my personal EO 552 here to Iraq. I was issued an aimpoint, but prefer EO. Anyway, back home I mounted it on the receiver with an arms 40L BUIS. I started out with it the same way here. However, I moved it to the front handguard so I could mount an AN/PVS 17 night sight on the receiver. From butt to muzzle I had a BUIS, the 17 mount, and the 552. I liked having the 552 forward, but didn't keep it there very long. I moved it back to the receiver because I was issued a PEQ 2, which is now on the top rail. I keep the PVS 17 on my helmet now. From butt to muzzle I now have a BUIS, and EO on the receiver, and the PEQ 2 on the front rail. You should try to borrow a forward mount EOtech set up to see if you like it. Some people claim it cuts down on tunnel vision. It did seem to do that. You would definitely need a very solid front rail system to mount it forward, especially for police work, which is what I do back home.