Arisaka Defense Optic Plate, Anodized Finish, Black, Fits Arisaka Offset Optic Mount, For Aimpoint Micro T1/T2/H1/H2, SIG Romeo 4, 5 (not 5X), Holosun HS403 (not A), HS503, HS515, HS530, Vortex Crossfire OOM-P5