Concrete gun emplacement + mounting for coastal gun emplacements.
Not a specific type but based on ones from WW1 on Orkney.
Dimensions. 75 mm L x 7 mm W x 8 mm H
All our resin models are supplied unpainted and assembly is required with a few of them. Photos are provided here for guidance as to their possible finish! Some basic modelmaking skills are required for things like flash removal, hole filling, priming, painting and weathering.