Ouch - poor design - GG&G Mossberg 590/500 Single Point Sling Attachment, Looped

I'm an experienced shooter. I wanted the single loop, but could only find the double loop. It went on my duty gun, the Mossberg 509A1. First trigger pull and WHAM, the right side ear slammed into the side of my hand and ripped skin off my finger. And yes, I and a good grip on it. Let's assume it wasn't a great grip - in a duty scenario, who needs that metal banging back into the dominant hand and cutting it? If it were only one-eared, then the attachment side ear would be fine. No cuts to the hand.

Off it came, permanently. I'll see about returning it. I guess I could play with it and cut the other ear off and smooth it out.