Holosun 510C Riser

Holosun 510C Spacer / Riser, Lower 1/3 Co-Witness. Manufactured from 6061 T6 aluminum, this Holosun 510C riser is designed to raise the HS510C Holosun quick detach mount base from an absolute co-witness height to a lower 1/3 co-witness height with standard AR-15 rifle platforms.