Evolution Gun Works Oversized Firing Pin Stop Series 70 Review

What You Didn’t Know About the Evolution Gun Works Oversized Firing Pin Stop Series 70

For anyone delving into the intricacies of a 1911 platform, particularly those seeking enhanced reliability and a more consistent shooting experience, the Evolution Gun Works Oversized Firing Pin Stop Series 70 presents a compelling upgrade. This seemingly small component plays a critical role in the functioning of the firearm, and EGW has engineered it to address common issues. My own journey with this part began due to a persistent, albeit minor, extractor “clocking” issue on my Springfield Armory RO Champion. The factory firing pin stop, while functional, allowed just enough play to sometimes interfere with smooth ejection. I had also read numerous forum discussions suggesting that a thicker, more precisely fitted stop could also contribute to managing felt recoil. After considering generic replacements and even contemplating a custom-machined part, the well-regarded reputation of EGW and their specific design for Series 70 models made this an easy decision. First impressions were positive; the part felt solid and well-machined, exhibiting a precise fitment that immediately hinted at its intended purpose of eliminating slop. It was clear from the outset that this was not a “drop-in” part in the simplest sense, but a component designed for thoughtful integration.

Real-World Testing: Putting Evolution Gun Works Oversized Firing Pin Stop Series 70 to the Test

First Use Experience

My testing primarily took place at my local indoor range, a controlled environment where precise firearm function is paramount. I fitted the Evolution Gun Works Oversized Firing Pin Stop Series 70 during a routine cleaning and maintenance session in my workshop, taking care to ensure proper installation. The process of fitting, as expected with an oversized part, required careful filing and test-fitting, which took about 20 minutes. This hands-on approach, while slightly more involved than swapping out a standard component, is crucial for unlocking the full benefits of such an upgrade. Initial live-fire tests involved a standard 50-round box of 9mm ammunition, focusing on ejection port observation and overall slide cycling feel. Conditions were standard indoor range temperature and humidity, with no unusual environmental factors. The ease of use, once fitted, was immediate; the slide felt more controlled and ejection appeared notably more consistent.

Extended Use & Reliability

After several hundred rounds and numerous range visits over a few months, this EGW firing pin stop has proven its worth. It has become a permanent fixture in my 1911, and I’ve experienced a marked improvement in ejection consistency. The extractor clocking issue has entirely vanished, contributing to a more reliable feeding and ejection cycle, even under rapid fire. Durability has been excellent; there are no visible signs of excessive wear, no cracks, and its performance remains as crisp as day one. Maintenance has been straightforward, requiring only the standard cleaning of the firearm. Compared to the original factory part, its improved stability has been a significant enhancement, and I haven’t encountered any performance drops.

Breaking Down the Features of Evolution Gun Works Oversized Firing Pin Stop Series 70

Specifications

The Evolution Gun Works Oversized Firing Pin Stop Series 70 is constructed from hardened steel, tested to a Rockwell hardness of 48 Rc. It is intentionally manufactured to be oversized, meaning it will not be a direct drop-in replacement and requires fitting by the end-user or a qualified gunsmith. This design choice is central to its function, providing a thicker profile than standard firing pin stops. Additionally, the internal corners are radiused to prevent cracking, and the back corner features a .015 radius which breaks the sharp edge while maintaining a square edge to help slow slide opening. EGW also specifies that their Series 80 firing pin stops can work in Series 70 guns, but Series 70 stops are only for Series 70 guns. This particular model is crafted for the Series 70 mechanism.

These specifications translate directly into tangible benefits. The 48 Rc hardness ensures excellent wear resistance, meaning this part will last for a very long time under normal shooting conditions. Its oversized nature is the key to eliminating unwanted movement, which directly addresses issues like extractor clocking and lateral play. The radiused internal corners are a critical design feature for longevity, preventing stress risers that could lead to failure over time, a common point of weakness in less robust designs. The specific .015 radius on the back corner is a subtle but important engineering detail; it modifies the way the slide interacts with the frame, potentially contributing to a smoother recoil impulse and more controlled slide velocity.

Performance & Functionality

The primary job of the Evolution Gun Works Oversized Firing Pin Stop Series 70 is to prevent the firing pin from moving forward when the slide is fully forward and to control the rearward movement of the slide. In my testing, this model excels at this primary function. By being precisely sized, it eliminated the lateral movement that could cause the extractor to “clock” or rotate slightly, leading to more reliable ejection. The slide cycle feels tighter and more controlled, and I observed consistently smooth and predictable brass ejection. The elimination of internal slop likely contributes to a more positive lock-up during firing. Its performance consistently meets, and in the case of ejection reliability, exceeds expectations for an aftermarket upgrade.

Design & Ergonomics

The design of this firing pin stop is dictated by its function, and EGW has executed it with precision. The hardened steel construction gives it a substantial feel, and the precise machining is evident upon inspection. While it’s not a component one handles extensively during shooting, its integration into the firearm is seamless. The radiused internal corners are a clever touch, demonstrating a design philosophy focused on both immediate performance and long-term durability. The square edge maintained on the back corner, despite the small radius, is crucial for its function in controlling slide travel. Its ergonomic contribution is indirect; by ensuring the firearm functions more smoothly, it contributes to a more comfortable and predictable shooting experience overall.

Durability & Maintenance

Given its hardened steel construction and Rockwell hardness of 48 Rc, this firing pin stop is built for substantial longevity. Under normal shooting conditions with proper firearm maintenance, it should easily outlast many other components in the 1911. I have seen no signs of premature wear, chipping, or deformation. Maintenance is straightforward: it is cleaned along with the rest of the firearm during routine disassembly. It’s important to ensure it is correctly fitted during installation to avoid any stress points that could compromise its durability. There are no obvious failure points that stand out beyond general wear and tear that would be expected from any firearm component over a very long service life.

Accessories and Customization Options

The Evolution Gun Works Oversized Firing Pin Stop Series 70 is a standalone part; it does not come with accessories. Its primary “customization” is the very fact that it is oversized and requires fitting, allowing the shooter to achieve a perfect lock-up for their specific firearm. EGW offers different firing pin stops for Series 70 and Series 80 guns, and even caliber-specific versions, which represents a level of customization in choice rather than add-ons. Compatibility with other brands is implicit for a 1911 component, but the fitting process is what makes it unique to your pistol.

Pros and Cons of Evolution Gun Works Oversized Firing Pin Stop Series 70

Who Should Buy Evolution Gun Works Oversized Firing Pin Stop Series 70?

The Evolution Gun Works Oversized Firing Pin Stop Series 70 is ideal for owners of Series 70 1911 pistols who are experiencing ejection issues, such as extractor clocking, or who simply want to achieve a more refined and reliable firearm. It is also a good option for those who appreciate well-engineered components that improve the fundamental operation of their pistol. This part is best suited for experienced shooters and hobbyists who are comfortable with or willing to learn basic firearm fitting procedures, or those who have a trusted gunsmith.

Conversely, individuals seeking a quick, no-modification fix, or those who are new to firearm maintenance and hesitant to undertake any fitting process, should likely skip this part. If you own a Series 80 1911, you will need to ensure you are purchasing the correct EGW firing pin stop for that specific platform, as this Series 70 model will not be compatible. For optimal use, having a set of small files, calipers, and a punch set can be helpful during the fitting process, though not strictly necessary for basic fitting.

Conclusion on Evolution Gun Works Oversized Firing Pin Stop Series 70

The Evolution Gun Works Oversized Firing Pin Stop Series 70 is a testament to how a small, well-engineered part can make a significant difference in the reliability of a firearm. Its oversized design directly addresses common 1911 issues, leading to demonstrably improved ejection and a tighter slide lock-up. The hardened steel construction and thoughtful design elements like radiused corners promise a long service life. While the requirement for fitting means it’s not for every user, for those willing to invest the time or a small gunsmithing fee, the benefits are substantial. At $14.99, the value proposition is high; you are getting a precision-machined component that enhances the core function of your pistol at a very accessible price point. I wholeheartedly recommend this firing pin stop to any Series 70 1911 owner looking to fine-tune their firearm’s performance and ensure rock-solid reliability.