Benelli M2 Magazine Cap
 

I just got a Benelli M2. Went to put a sling on it and noticed that sling connection is going to scratch the sh*t out of the magazine cap because it's a concave design. Why the heck would benelli make a magazine cap that way? What sling can I put on this thing that won't scratch the crap out of the magazine cap? It's that or locate an aftermarket magazine cap that isn't concave. I spend over a grand on a gun and that's what I get...Any help is appreciated.