Can I use these Pro-Shot 20SC snap caps in my semi-automatic 20 gauge shotgun?

No, Pro-Shot explicitly states that these mop-style snap caps are not recommended for semi-automatic or pump-action magazine cycling. The extended cotton and wool mop can snag or fray as it feeds through lifters and magazine tubes, meaning they are strictly optimised for break-action over-and-under and side-by-side shotguns.

Do these snap caps provide any protection against chamber rust during long-term storage in outback conditions?

Yes, the attached cotton and wool mops are treated with natural lanolin to help protect your shotgun chamber walls from moisture and corrosion. For enhanced rust inhibition in humid or harsh bush environments, users can also saturate the mops with gun oil or a CLP such as Pro-Shot Zero Friction.

What is the thread size for replacing the cotton mops on the Pro-Shot 20SC?

The Pro-Shot 20SC snap caps feature a standard replaceable #5/16-27 thread cotton mop interface. This allows you to easily unscrew and swap out worn mops while keeping the precision-machined solid brass head and spring-dampened false primer mechanism intact.

Do these snap caps require any electrical compliance or special licensing to purchase in Australia?

As unpowered, purely mechanical dummy rounds, electrical compliance standards such as 240V mains compatibility, SAA approval, or ACMA/RCM certification are completely not applicable. Furthermore, dummy rounds and snap caps can be legally purchased across all Australian states and territories without needing a firearms licence.

20 Gauge Snap Caps - Pro-Shot 20SC

The Pro-Shot 20 Gauge Brass and Wool Mop Snap Caps (Model 20SC) are precision-machined dummy rounds engineered specifically for 20 gauge break-action shotguns. Built with a solid brass body and a spring-dampened false primer, these snap caps cushion the impact of the firing pin during dry fire practice to prevent component fatigue. Each unit is fitted with a natural lanolin-treated cotton and wool mop threaded into the base, which lubricates the chamber walls and inhibits rust during extended storage.

Key Features

Spring-Loaded Primer Protection: Features an internal spring-dampened brass false primer that absorbs hammer impact and protects firing pins from fatigue or breakage during dry firing.
Corrosion-Inhibiting Chamber Mops: Fitted with natural lanolin-treated wool and cotton mops that protect 20 gauge chamber walls from moisture and corrosion during storage, with the option to apply additional gun oil.
Replaceable Threaded Design: Integrated with a standard #5/16-27 thread mop interface, allowing worn cleaning mops to be easily unscrewed and replaced.
Spring De-Tensioning: Enables safe de-tensioning of hammer and cocking springs in break-action shotguns prior to case or safe storage.
Precision Brass Construction: Machined from solid brass to ensure consistent fitment in standard 20 gauge chambers without risk of rim chipping.

Product Specifications

Model: 20SC
Calibre/Gauge Compatibility: 20 Gauge
Head & Body Material: Precision-machined solid brass
Primer Mechanism: Spring-dampened brass false primer
Mop Thread Interface: #5/16-27 thread
Mop Material: Natural lanolin-treated cotton/wool
Quantity: Pack of 2
Country of Manufacture: USA

Who is the Proshot 20 Ga Snap Caps for?

20 Gauge Clay Target Shooters Practising Trigger Control — Provides a spring-dampened brass false primer in a pack of 2 dummy rounds to cushion hammer strikes and safely practice trigger pull mechanics without damaging firing pins.
Upland Hunters Storing Break-Action Shotguns Long Term — Utilises natural lanolin-treated cotton/wool inserts attached via a #5/16-27 thread interface to coat 20 gauge chamber walls against corrosion while de-tensioning internal hammer springs during long-term storage.

Less suitable for: Semi-automatic or pump-action magazine cycling, as the extended wool mop can snag or fray in lifters and feed tubes; solid-body aluminium dummy training rounds are better suited for full-cycle action feeding and malfunction drills. Also incompatible with any chamber sizes other than 20 gauge (such as 12 gauge, 16 gauge, or 28 gauge).

SKU	PS41251LP
Model #	20SC
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot 20sc 20 Gauge Snap Caps Brass Wool Mop 2 Pack

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