Benelli used a finish on 4 guns they called grip tight. The four guns are the 20ga black M2, 20ga black cordoba, the 12 gauge black cordoba and an black r1 rifle, I don't know the caliber. This is what I was told when I called about my M2. They replaced the stock and forend on my 12 year old M2 under warranty, They warned me it would take a while to get both parts and it did but I did get them