Benelli Montefeltro 20GA Stock Drop Assby. Kit 83140

20ga. Stock Drop Assembly Kit. This 20 gauge kit includes 3 shims, (Z) 45mm, (A) 50mm, (C) 60mm and a reversible drop plate. These shims in conjunction with the drop plate allow you to adjust the drop of the stock on your 20 Gauge shotgun. (Z) 45mm Drop Shim (A) 50mm Drop Shim (C) 60mm Drop Shim Reversible Drop Plate (To change cast, you must use Cast Shim # 61222).