They are really nice replicas, I have one, but I didn't get a sling with mine.
Mad Mike very kindly provided some dummy rounds for me, and it is now an awesome part of my collection.
It really doesn't feel very live when you pick it up, somehow the weight is strangely distributed - but it is a great looking replica.
I am sorry to hear you had a hard time being a middle man - I did it a couple of times, both times it was nerve wracking because I realized if the package got lost, I would be at fault to both parties. However we all got lucky as the replicas got to their various destinations, but it wasn't much fun, and I won't do it again.
Thanks for sharing the pics.
Pit.
(The real FG42 for comparison)