What size dovetail rails are compatible with the Sportsmatch RB5 adapter bases?

The Sportsmatch RB5 adapters are designed to fit standard 9.5mm to 11.5mm dovetail rails, which includes the popular 3/8 inch dovetails commonly found on air rifles and rimfire rifles. They convert these traditional dovetails into a standard Weaver and Picatinny format to accept modern tactical optics.

How do the RB5 adapter bases affect the loading port on a bolt-action or air rifle?

The RB5 features a convenient two-piece split design consisting of two independent blocks, each measuring 21mm in length. Because they are separate units rather than a single continuous rail, they leave the breech or loading port unobstructed for seamless, unhindered pellet or cartridge loading.

Will these adapter bases hold up against heavy recoil in Australian outback hunting conditions?

Yes, constructed in the UK from high-tensile aluminium alloy with a matte black anodised finish, each block weighs approximately 27 grams and utilizes double-clamped Allen head bolts. They also feature a removable recoil arrestor pin to prevent scope shift, making them reliable for field demands and rimfire calibres like .22 LR and .17 HMR.

Are there any electrical or regulatory compliance requirements like RCM for the Sportsmatch RB5?

No, the Sportsmatch RB5 is a purely mechanical firearm and shooting accessory containing no electronic components. Therefore, electrical compliance criteria such as 240V mains compatibility, SAA approvals, and RCM certifications are not applicable to this product.

Picatinny Adapter Base - Sportsmatch RB5

The Sportsmatch 3/8" To Weaver Picatinny Adapter Bases (Model: RB5) is a precision-engineered, two-piece mounting system designed and manufactured in the United Kingdom by Sportsmatch UK. This premium adapter set is engineered to solve a common compatibility challenge for shooters, allowing the conversion of standard 9.5mm to 11.5mm (including 3/8") dovetail receiver rails to accept modern Weaver and Picatinny-style optic rings and accessories. Built to withstand demanding field conditions, the RB5 provides a secure, highly stable platform for mounting advanced optics without requiring permanent modifications to your firearm.

Key Features:

Unobstructed Breech Access: The two-piece split design ensures that your rifle's breech or loading port remains completely clear, allowing for fast and unhindered manual loading on bolt-action rimfires and pre-charged pneumatic (PCP) air rifles.
Recoil Control: Equipped with a removable recoil arrestor pin, these bases prevent scope drift and shifting under recoil, making them highly reliable on spring-piston airguns and rimfire rifles.
Versatile Optics Mounting: Enables shooters to quickly adapt traditional dovetail receivers to accept modern tactical scopes, night vision systems, thermal imagers, and range-finding optics.
Double-Clamped Fasteners: Utilises heavy-duty Allen head bolts on each block to provide maximum clamping force and consistent alignment.
Robust Materials: Manufactured from high-tensile aluminium alloy and finished with a durable matte black anodisation for long-lasting corrosion and wear resistance.

Product Specifications:

Brand: Sportsmatch UK
Model/SKU: RB5
Input Rail Compatibility: 9.5mm to 11.5mm (including standard 3/8") dovetail rails
Output Rail Compatibility: Standard Weaver / Picatinny format
Overall Height (A): 20 mm
Elevation Increase: 17 mm
Block Width: 21 mm
Block Length: 21 mm
Weight (Single Block): Approximately 27 grams
Weight (Pair Total): 53 grams to 54 grams
Material: High-tensile aluminium alloy
Finish: Matte black anodised

Who It Is For:

The Sportsmatch RB5 adapter is specifically designed for Australian hunters, target shooters, and rural pest controllers utilising .22 LR, .17 HMR rimfires, or high-powered air rifles. It is the ideal solution for shooters who need to mount modern, heavy, or quick-release Picatinny-compatible optics—such as thermal scopes or night vision units—onto traditional dovetail receivers. Whether you are navigating the harsh conditions of the Australian outback or shooting on a local range, these adapters deliver a rugged, non-slip mounting solution that keeps your optics zeroed under all operational conditions.

SKU	SPM39145LP
Model #	RB5
Brand	Sportsmatch
Shipping Weight	1.0000kg

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Sportsmatch Rb5 Adapter Bases 3/8 Inch To Picatinny

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