The Hawke Bubble Level (9–11mm) is a passive, rail-mounted anti-cant indicator designed to prevent point-of-impact shift on airguns and rimfire rifles. Machined from high-grade aluminium with an anodised matte black finish, this spirit level clamps directly to standard 9–11mm (approx. 3/8-inch) dovetail rails. Featuring a high-visibility fluid-filled vial with an integrated white reference line, it allows shooters to verify rifle verticality at a glance during bench-level reticle setup or prior to breaking a shot in the field.

Key Features

• Direct Dovetail Mounting: Clamps straight onto standard 9–11mm / 3/8-inch airgun and rimfire receiver rails without requiring scope tube removal or riser adapters.
• Anti-Cant Visual Reference: High-visibility fluid vial and white reference alignment line indicate lateral tilt to eliminate cant-induced horizontal and vertical target dispersion.
• Ultra-Lightweight Profile: Weighs just 8 g (0.3 oz) and measures 46 mm (1.8 in) in length, adding negligible weight directly to the firearm receiver without cluttering the primary sight picture.
• Passive Mechanical Operation: Requires no batteries, wiring, or external power sources for continuous bench and field operation.

Product Specifications

• Mounting Compatibility: 9–11mm (approx. 3/8-inch) dovetail rails
• Length: 46 mm / 1.8 in
• Weight: 8 g / 0.3 oz
• Housing Material: Precision-machined aluminium
• Finish: Anodised matte black
• Level Mechanism: Passive fluid-filled spirit bubble vial

Who is the Hawke Bubble Level (9–11mm) for?

• Air rifle target shooters — Provides a direct-to-receiver dovetail rifle bubble level that adds only 8 g of weight across a 46 mm length, maintaining rifle balance in Field Target and Hunter Field Target disciplines where minor cant causes point-of-impact errors.
• Precision rimfire small-game hunters — Mounts directly to standard 9–11mm dovetail rails to ensure absolute reticle verticality on shots extending past 50 m.

Less suitable for: Firearms equipped with Picatinny (MIL-STD-1913) or Weaver bases, which require dedicated rail-clamp levels or 30mm/1-inch scope-tube ring bubble levels instead.