Forward Controls Design Aimpoint ACRO Full Size Glock Gen 5 MOS Adapter Plate 17-4 Stainless Steel Black OPF-G ACRO 17-4 SS. This Glock compatible mounting plate is designed to fully support the optic in the front and rear with threaded posts that connect with the sight-to-mount screws ensuring minimal sight movement. The adapter plate is made of steel and covered in Melonite to increase the ability to avoid corrosion and to increase the lifetime of the mounting plate. Specifications for Forward Controls Design Aimpoint ACRO Full Size Glock Gen 5 MOS Adapter Plate: Manufacturer: Forward Controls Design Red Dot Sights-Footprint: Aim Point Acro Optic Cut: Aimpoint ACRO Color: Black Finish: Nitride Weight: 1 oz Gun Make: Glock Package Contents: Forward Controls Design Aimpoint ACRO Full Size Glock Gen 5 MOS Adapter Plate Forward Controls Design OPF-G ACRO 17-4 SS: Aimpoint ACRO Full Size Glock Gen 5 MOS Adapter Plate 17-4 Stainless Steel Black