Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety Review

What Makes the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety Stand Out?

For any dedicated Browning Hi-Power owner, the pursuit of enhanced ergonomics and operational efficiency is a constant. My own journey led me to seek an upgrade for the factory safety, which, while functional, lacked the intuitive feel and accessibility I desired, especially for two-handed manipulations. The Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety presented itself as a compelling solution, promising a significant improvement for both right and left-handed shooters. It’s a component designed not just for function, but for a more refined user experience.

My initial impression upon unboxing was one of solid craftsmanship. The blued finish was deep and uniform, speaking of careful manufacturing processes. It felt substantial in the hand, with no rough edges or apparent imperfections. I considered a few other aftermarket options, but many lacked the dedicated ambidextrous design or were known for requiring extensive fitting. The promise of a drop-in or near drop-in solution, combined with the reputation of Cylinder & Slide, made this a clear choice. This part offered a tangible sense of potential improvement before even touching a tool.


Real-World Testing: Putting the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety to the Test

First Use Experience

The testing ground for this component was primarily my home workshop, coupled with focused range sessions. My initial installation was performed on a well-maintained Browning Hi-Power Mk III. The scenario was simple: to replace the standard thumb safety with this extended, ambidextrous version, and then immediately assess its feel and function.

During the initial fitting, I noticed that the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety required a small amount of filing on the engagement surface. This is not uncommon with aftermarket parts, especially when aiming for precise tolerances. Once fitted, the operation was immediately smoother. The extended shelf provided a much more positive purchase for my thumb, and crucially, for my left thumb as well, during two-handed shooting drills.

Extended Use & Reliability

After several hundred rounds and countless dry-fire manipulations, the extended safety has proven to be a robust and reliable upgrade. It has endured consistent use without any signs of loosening or wear on the finish or engagement surfaces. The blued finish has held up remarkably well, even with occasional handling and cleaning.

Maintenance has been straightforward, essentially mirroring the regular cleaning of the firearm. There’s no special care required beyond ensuring it’s clean and properly lubricated during routine firearm maintenance. Compared to my previous experiences with less expensive, generic safety replacements, this unit offers a noticeable leap in durability and consistent performance.

Breaking Down the Features of the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety

Specifications

The Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety is crafted from steel, finished in a deep blued coating, and designed to fit all 9mm and .40 S&W Browning Hi-Power pistols. Its extended, ambidextrous design is the primary feature, offering an enlarged surface area for engagement by both the dominant and support hand. This specification is crucial because it directly impacts the speed and certainty with which the safety can be manipulated. Unlike the factory safety, which can be a bit finicky, this extended version provides a more generous contact point, making positive deactivation or engagement much more reliable under pressure.

Performance & Functionality

In terms of its core function, this safety excels. It positively engages and disengages the firing mechanism with a satisfying, albeit firm, click. The extended shelf ensures that even with gloved hands or during rapid firing drills, manipulating the safety becomes a more intuitive and less error-prone task. Its primary job of securing the firearm is performed without any compromise.

The main strength of this component lies in its improved ergonomics and accessibility. For left-handed shooters, or even right-handed shooters who prefer a firm grip and support-hand activation, the ambidextrous nature is a game-changer. A minor point of contention, perhaps, is the initial fitting requirement, which, while expected for precision parts, means it’s not a simple swap-out for everyone. However, once properly fitted, its performance is undeniable.

Design & Ergonomics

The design of the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety is a clear win for functionality. The extended levers are well-proportioned, offering enough surface area without becoming cumbersome or creating unintended snag points. The blued finish is not only aesthetically pleasing but provides a durable and non-reflective surface.

Ergonomically, it significantly enhances the manual of arms for the Hi-Power. The larger surface makes it easier to find and operate the safety quickly and confidently. The slightly textured surface (inherent to the manufacturing process) also aids in grip, even if it’s not aggressively checkered. The overall feel is one of precision engineering, designed to integrate seamlessly with the pistol’s existing lines while enhancing its usability.

Durability & Maintenance

The Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety is built for longevity. Constructed from hardened steel and finished with a robust bluing, it’s designed to withstand the rigors of regular use and cleaning. I’ve seen no indication of premature wear, such as galling or chipping, even after repeated manipulations.

Maintenance is as simple as keeping the firearm clean and lubricated. The part itself doesn’t require any specialized care. Potential concerns would primarily revolve around incorrect fitting, which could stress the mechanism. However, assuming proper installation by a qualified gunsmith or an experienced DIYer, its durability should be excellent.

Accessories and Customization Options

This particular product is an upgrade part for a firearm, and as such, it doesn’t typically come with accessories. Its value is in its direct enhancement of the pistol’s functionality. It is, by its nature, a precision-engineered replacement part, designed to integrate with the Browning Hi-Power platform. There are no external accessories or customization options for the safety itself; its customization comes from its ambidextrous design and extended surface area.

Pros and Cons of the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety

Pros

  • Enhanced Ambidextrous Control: Significantly improves usability for both left and right-handed shooters.
  • Improved Grip Surface: The extended shelf offers a more positive and reliable purchase for thumb engagement.
  • Solid Construction and Finish: Made from steel with a durable blued finish that complements the firearm.
  • Reliable Engagement: Provides a positive click and secure operation of the safety mechanism.
  • Reputable Manufacturer Quality: Cylinder & Slide is known for producing high-quality firearm parts.

Cons

  • Requires Fitting: May necessitate minor gunsmithing or filing for perfect, drop-in fitment.
  • Higher Price Point: Can be more expensive than basic, non-ambidextrous safety levers.
  • Firm Engagement: The safety can be quite firm initially, requiring a break-in period for optimal ease of manipulation.


Who Should Buy the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety?

This component is an excellent choice for any Browning Hi-Power owner looking to improve the ergonomics and operational efficiency of their pistol. It is particularly beneficial for ambidextrous shooters or those who frequently use their support hand for weapon manipulation. Home workshop enthusiasts or individuals comfortable with basic firearm modification will find the potential fitting process manageable.

Those who should perhaps reconsider are users seeking an absolute “drop-in” part with no adjustment needed, or individuals who are perfectly content with the factory safety’s performance and ergonomics. For optimal use, a quality gunsmith would be recommended for installation if you are not experienced with such modifications. A good holster that doesn’t snag on the extended safety would also be a practical consideration.

Conclusion on the Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety

The Cylinder & Slide Hi Power Extended Ambidextrious Thumb Safety is a worthwhile upgrade for Browning Hi-Power enthusiasts. It delivers on its promise of enhanced control and accessibility, particularly for two-handed shooting techniques. While it may require a bit of fitting, the resulting improvement in handling and reliability justifies the effort and cost for those seeking a more refined shooting experience.

The value proposition is strong, offering a significant ergonomic benefit that enhances the usability of an already classic firearm. I would absolutely recommend this part to fellow Hi-Power owners who are looking for an upgrade that addresses a known ergonomic limitation of the stock safety. If you prioritize functional enhancements and appreciate quality firearm components, this extended ambidextrous safety is a solid investment.

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