The Holosun Lower 1/3 Co-Witness Picatinny Mount is a durable and easy-to-install mounting solution designed for Holosun 503 and 403 series optics. Constructed from rugged 6061 T6 aluminum with a hard-anodized corrosion-resistant finish, this mount is built to withstand tough tactical and range conditions. It includes a spacer that allows for a lower 1/3 co-witness mount height, aligning your optic with iron sights for an improved sight picture and enhanced target acquisition. Compatible with Picatinny rail systems, this mount offers a secure and reliable platform for your firearm setup.