The Sightmark SM39010 .300 Win Short Mag Boresight is a chamber-insert laser alignment tool designed for fast and precise optic zeroing on .300 Winchester Short Magnum (WSM) rifles.
Inserted like a live cartridge, it projects a bright red laser along the bore axis, allowing quick optic alignment before live-fire zeroing.
Speeds up the initial sight-in process and reduces ammo usage.
Fits directly into the rifle chamber.
Provides a clear aiming reference point.
Reduces time and cost during sight-in.
| Specification | Value |
|---|---|
| Manufacturer | Sightmark |
| Model | SM39010 |
| Type | Chamber laser boresight |
| Caliber | .300 Win Short Magnum (WSM) |
| Laser Color | Red |
| Material | Brass |
| Wavelength | 632–650 nm |
| Output Power | <5 mW |
| Power Source | AG5 or AG3 batteries (variant dependent) |
| Battery Life | ~1 hour |
| Sighting Range | 15–100 yards |
| Application | Optic alignment / zeroing aid |
