Contessa Picatinny Rail for CZ 527 With 0 MOA or 20 MOA Options 16mm Dovetail Clamping Mount Rail Length: - 129mm Distance Between Bases: - 55mm Height (BH) - 12.5mm Weight: - 142g Material: - Steel Code Ref: PH63/0 Contents Supplied: - 1x Steel Rail, - 1x Wrench, This Steel Picatinny Rail is precision made by Contessa Alessandro & C. s.n.c. The part is precision made to fit the rifle with exact precision. The CZ 527 has a 16mm Dovetail with a recess for a recoil lug on the back base.