Will the Hawke 22400 adaptor base fit my CZ rimfire rifle with a factory 3/8-inch dovetail?

Yes, this adaptor is specifically designed to clamp onto standard 9-11mm airgun and 3/8-inch rifle dovetail rails found on popular rimfire rifles like CZ, Lithgow, and Ruger models in the Australian market. It bridges the gap by converting these traditional narrow grooves into modern 21-22mm Weaver and Picatinny rails.

How does the two-piece design affect eye relief and mounting flexibility?

The Hawke 22400 features a two-piece split construction totalling 6.0 inches (152 mm) in length, comprising one short piece and one extended cantilever piece. This configuration accommodates interrupted receiver actions and bolt-throw clearances while allowing you to position optics further forward or backward for optimal eye relief.

Are there any electrical compliance certifications required for this adaptor in Australia?

No, the Hawke 22400 is a purely mechanical aluminium accessory with no electronic components. Therefore, 240V mains power compatibility, AS/NZS 3112 plugs, and SAA/RCM regulatory electrical certifications are not applicable to this product.

Can I use this adaptor base on heavy-recoiling spring-piston air rifles or for extreme long-range shooting?

While it performs well on rimfire and standard air rifles, heavy-recoiling spring-piston air rifles generally benefit more from a solid 1-piece base for maximum bridge rigidity. Additionally, this model provides flat 0 MOA alignment, so if you require extreme long-range bullet drop or severe barrel droop compensation, an elevated adjustable riser base like the Hawke Model 22403 should be used instead.

Dovetail Adaptor Base - Hawke 22400

The Hawke Adaptor Base 2 Piece 9–11mm / 3/8" Dovetail to Weaver / Picatinny (Model: 22400) converts traditional narrow dovetail receiver rails to modern Weaver and Picatinny mounting platforms. Built with a two-piece split configuration, it bridges receiver gaps while accommodating interrupted actions, loading ports, and bolt throw paths on rimfire rifles and airguns. The split setup features an extended cantilever segment measuring approximately 100mm (3.9 inches) and a shorter piece measuring roughly 53mm (2.1 inches), offering a combined total length of 6.0 inches (152 mm) for flexible eye relief adjustment.

Key Features

Receiver Conversion: Transitions standard 9–11mm airgun and 3/8" rifle dovetail rails to standard 21–22mm Weaver/Picatinny top profiles.
Cantilever Design: Features an overhanging rail section to allow forward or rearward optic placement for optimal eye relief.
Two-Piece Split Profile: Accommodates open-top loading ports, varying action lengths, and bolt cut-outs without obstructing rifle operation.
Secure Fastening: Employs double hex 3mm clamp fixings with 8-32 threading to maintain rail grip.
Durable Construction: Machined from high-grade aluminium with a matte black anodised finish, adding a total weight of only 3.3 oz (93–94 g) to the rifle setup.

Specifications

Base Interface: 9–11mm Airgun and 3/8" Rifle Dovetail
Top Interface: Weaver / Picatinny (approx. 21–22mm)
Total Combined Length: 6.0 inches (152 mm)
Weight: 3.3 oz (approx. 93–94 g)
Configuration: 2-piece (one ~53mm segment, one ~100mm cantilever segment)
Fixings: Double Hex (3mm) screws, 8-32 thread
Material: High-grade aluminium
Finish: Matte Black Anodised
Elevation / Angle: Flat 0 MOA

Who is the Hawke 2 Piece Adaptor Base 3/8 To Weaver/Picatinny for?

Rimfire rifle owners mounting Weaver optics on 3/8-inch dovetails — converts legacy 9–11mm airgun and 3/8" rifle dovetail rails to standard 21–22mm Weaver/Picatinny platforms across a total length of 6.0 inches (152 mm), allowing modern scopes and red dots to clear interrupted bolt actions.
Air rifle shooters mounting digital night vision units — provides a lightweight 3.3 oz (approx. 93–94 g) cantilever mounting platform that transitions factory 9–11mm dovetails to Picatinny clamps, allowing forward or rearward unit positioning for correct digital eye relief.

Less suitable for: Long-range shooting requiring built-in elevation compensation or heavy-recoiling spring-piston airguns requiring monobloc rigidity; use an elevated adjustable riser base or a solid 1-piece base instead.

SKU	HWK39767LP
Model #	22400
Brand	Hawke
Shipping Weight	1.0000kg

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Hawke 22400 Adaptor Base 3/8 Inch Dovetail To Weaver Picatinny Rail

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