Dimensions - (W x H) 51.00 x 48.00...
Open Column EOTech 551 with 1 MOA dot and 65 MOA circle - 114 x 51 x 65 mm, 220 g without batteries, black, matt anodized, horizontal / vertical correction yes.
Open Columnar EOTech 552 with 1 MOA dot and 65 MOA circle - 139 x 51 x 65 mm, 246g without batteries, red, matt anodized, horizontal / vertical correction yes.