This again my M4A1.
I have, of course, made some improvements.
I have had The iron sight with a rail on top of it.
Some rail protector system (short and long)(as seen on rail when there is no attachment linked to them).
I have had an holographic leaf sight for the M203 and also a camera attachment linked with the battle CPU and the leaf sight.
I moved the sniper scope to be on the rail of the rear sight.
I have had ring to add a string (I don't know the exact english word) to carry the rifle.
I also have had a curved stanag mag of 30 bullet