So, I had a comfortech stock break on me a while back, and I called Benelli, and they sent me a replacement. However, the replacement doesn't seem to fit. The hole for the buffer tube is smaller diameter than the buffer tube. As you can see from the attached pictures, the texturing on the grip is different and the front of the stock is different. I'm wondering if this is for the M2/R1 instead of the Supernova. Anyone have any suggestions?