OSight gave me a rare opportunity to test an optic before it was released to the public. The SE MOS is a modification of the SE designed to fit exclusively on MOS-cut Glock slides. This pre-release sample fits 9mm Glock slides; a 10mm and .45 versions are in development.

This new SE mounts directly onto a Glock MOS slide, allowing it to co-witness to factory iron sights. It molds and fits onto a Glock slide like it was made to be there. The SE MOS retains the SE’s multi-reticle 2 MOA dot and 32 MOA sunburst circle. It upgrades the side-tray battery to a CR 1632, giving it a whopping 120,000 maximum battery life!

OSight expects to release the MOS sometime in August 2026 at a similar price point as the standard SE model.

BUY

Amazon

SPECS

Reticle Type: 2 MOA dot / 32 MOA circle

Reticle Color: Red

Window Size: 0.83 x 0.55 in (21 x 14 mm)

Wind & Elev Travel: ± 35 MOA

Adjustment 1 MOA per Click

Battery: CR1632

Max. Runtime 140,000 (Level 3)

Brightness Settings: 8 & 2 NV

Waterproof: IPX7

Body: 7075 Aluminum

Weight: 1.59 oz / 45 g

Footprint: MOS