Holosun AL1/3CW1.63 Lower 1/3 Co-Witness Mount

Key Features

• Holosun T1 Footprint – Fits Holosun 403 and 503 series micro red dot sights (HS/HE403, HS/HE503).
• Lower 1/3 Co-Witness – Sets the optic at a lower 1/3 co-witness height for a heads-up sight picture with AR-height iron sights.
• 1.63″ Optical Height – 1.63″ from the Picatinny surface to the center of the lens.
• High-Strength Aluminum – Aircraft-grade aluminum with a hard-anodized, corrosion-resistant finish.
• Cross-Bolt Clamp – Installs onto any standard Picatinny, Weaver, or MIL-STD-1913 rail via a secure cross-bolt and clamp.
• Holds Zero – Rigid one-piece riser keeps the optic aligned through repeated recoil.

Description

The Holosun AL1/3CW1.63 is a lower 1/3 co-witness riser for Holosun 403 and 503 series micro red dot sights. It raises the optic to a 1.63″ height — measured from the rail to the center of the lens — so AR-height backup iron sights sit in the lower third of the window for a clean, heads-up sight picture.

Machined from high-strength aircraft-grade aluminum with a hard-anodized finish, the riser installs onto any standard Picatinny, Weaver, or MIL-STD-1913 rail via a cross-bolt and clamp and holds zero through repeated fire. All mounting hardware is included.

Package Includes

• ✓1x AL1/3CW1.63 Lower 1/3 Co-Witness Riser
• ✓Mounting Hardware