The Simmons Universal Laser Bore Sighter kit is a pre-alignment tool designed to help shooters align optical scopes, red dots, or iron sights with the rifle bore prior to live-fire zeroing. By inserting an expanding arbor into the muzzle, the unit projects a visible red laser dot to establish an initial point of aim at distances between 25 and 50 yards (approximately 23 to 46 metres). This process allows you to get on paper quickly, reducing the time and ammunition spent on the range during final zeroing.

Key Features

• Universal Muzzle Fitment: Utilises expanding arbors to lock securely into firearm muzzles across a broad range of barrel diameters.
• Visible Red Laser: Emits a Class 2 / Class 3R red beam down-bore to establish bench alignment indoors or at typical short-range distances.
• Self-Contained Power: Operates entirely on internal DC button cells with a simple twist-activation mechanism, requiring no external cables or mains charging.
• Lightweight Build: Measures approximately 6 inches (15.24 cm) in length with a total package weight under 180 grams (unit itself is under 100 grams) for easy transport in range bags.

Product Specifications

• Calibre Compatibility: .22 to .50 calibre (5.56 mm to 12.7 mm) barrels
• Overall Length: Approximately 6 inches (15.24 cm)
• Weight: Under 100 g (device only); 140–180 g (total package)
• Power Source: 3 × 1.5V button cell batteries (LR44 / SR44 / AG13 / A76)
• Laser Class: Class 2 / Class 3R visible red laser
• Recommended Alignment Range: 25 to 50 yards (approx. 23 to 46 metres) in low-light or indoor conditions

Who is the Simmons Universal Laser Bore Sighter for?

• Hunters and target shooters mounting new rifle scopes — Requires rough zeroing on newly mounted optics without wasting live ammunition, utilising expandable arbors to align sights on rifles chambered from .22 to .50 calibre at indoor or workshop distances of 10 to 25 metres.
• Gunsmiths servicing multiple calibre long arms and handguns — Needs a single, portable alignment tool measuring approximately 6 inches in length that adapts to various firearm actions and barrel sizes across the .22 to .50 calibre range for routine bench adjustments.

Less suitable for: Firearm owners seeking to bore sight sub-calibre barrels below the .22-calibre (5.56 mm) lower threshold—such as .17 HMR, .177 airguns, or .204 Ruger—who require a dedicated sub-calibre arbor system, or long-range shooters attempting alignment in direct Australian sunlight where red lasers wash out beyond 25 to 30 metres, who are better served by a mechanical optical collimator or high-visibility green laser bore sighter.