The Hawke 2-Piece 3/8″ (Rifle) / 9–11mm Dovetail to Weaver Adapter Base (Model 22405) converts grooved receivers on rimfire rifles and airguns into standard Weaver and Picatinny-compatible mounting platforms. Weighing only 25 g (0.9 oz) across the set, this low-profile mounting solution allows shooters to install modern optic rings, compact red dot sights, and accessories without drilling or modifying the firearm receiver. The two-piece design allows independent placement of the front and rear bases across a combined span length of approximately 76 mm (3″), ensuring custom spacing to accommodate varied scope tube lengths, eye relief requirements, and rifle ejection ports.

Key Features

• Dovetail Conversion: Converts standard 3/8″ (approximately 9.5 mm) and 9–11 mm grooved dovetail receivers into a standard Weaver/Picatinny top rail platform.
• Independent Two-Piece Configuration: Allows flexible positioning along the receiver to maintain clear access to ejection ports and match specific optic ring spacing.
• Secure Double-Hex Clamping: Features two hex clamping screws per base block to secure the adapter firmly onto the receiver dovetail.
• Durable, Lightweight Build: Manufactured from high-grade aluminium with a matte black anodised finish, adding minimal height and minimal bulk to the firearm.

Specifications

• Product Model: Hawke 22405
• Configuration: 2-piece adapter set
• Interface Compatibility: 3/8″ (approx. 9.5 mm) and 9–11 mm dovetail rails
• Top Rail Type: Weaver / Picatinny standard
• Total Combined Length: ~76 mm (~3″) total span (~38.2 mm per block)
• Weight: 25 g (0.9 oz)
• Fixings: Double hex clamping screws per base
• Material: High-grade aluminium
• Finish: Matte black anodised

Who is the Hawke Dovetail to Weaver Adapter for?

• Rimfire rifle shooters — who need to adapt 3/8″ (9.5 mm) or 9–11 mm grooved receivers on .22 LR, .22 WMR, or .17 HMR rifles to fit modern Picatinny or Weaver optic rings, using a lightweight 25 g two-piece adapter set that allows variable ring spacing across an ejection port.
• Airgun pest controllers — who require a modular mounting solution to install compact red dots or standard Weaver-mounted scopes onto air rifles with 9–11 mm dovetails, utilising an independent 2-piece rail adapter measuring approximately 76 mm (3″) in total span length.

Less suitable for: Firearm receivers equipped with wider mounting interfaces, such as 17 mm dovetails or pre-existing Picatinny rails, as well as high-recoil centrefire magnum rifles; these platforms require a dedicated one-piece steel base or calibre-specific recoil-stopped mounting rail.