As the title, 1" low Optilocks blued. Came with a rifle but we're surplus to requirements. Good condition with only a slight bit of bluing worn (just being 100% honest) and comes with two spare screws. Also one of the plastic inserts has broken, either can be sorted with a dab of super glue or replacements are about £6 from Uttings.
£35 posted (all packed and ready once payment received) either paypal, bank transfer or cash if collected.