Let’s Talk About Evolution Gun Works Main Hammer Spring ISMI
The Evolution Gun Works Main Hammer Spring ISMI is a small but vital component in any 1911 or similar firearm, playing a crucial role in reliable ignition. Manufactured by Evolution Gun Works (EGW), this spring is designed to offer consistent and dependable performance, available in either 17lb or 19lb configurations. This seemingly simple part can significantly impact trigger pull weight and overall firearm function, making it a point of consideration for any serious shooter.
What pushed me to explore this particular hammer spring? I was chasing a smoother, more consistent trigger pull in my 1911 without compromising reliability. The factory spring felt a bit heavy and inconsistent, detracting from the shooting experience.
Upon receiving the Evolution Gun Works Main Hammer Spring ISMI, my first impression was positive. It arrived in simple, functional packaging. The spring itself appeared well-made, with a uniform black finish and no visible imperfections. It felt robust in hand, inspiring confidence.
There are other hammer springs on the market from companies like Wolff Gunsprings and Wilson Combat. However, the EGW spring caught my eye due to its use of ISMI springs. I was intrigued by ISMI’s reputation for producing high-quality springs used in demanding applications, including machine guns and Indy car racing.
My initial reaction was one of cautious optimism. I was excited to see if the Evolution Gun Works Main Hammer Spring ISMI could deliver the improved trigger feel I was seeking, while also maintaining the reliability that is paramount in any firearm.
Real-World Testing: Putting Evolution Gun Works Main Hammer Spring ISMI to the Test
First Use Experience
My first test of the Evolution Gun Works Main Hammer Spring ISMI was at an outdoor shooting range. I installed the 17lb spring in my 1911 and ran several magazines through it, focusing on trigger feel and primer ignition. The weather was clear and dry, providing ideal testing conditions.
The difference in trigger pull was immediately noticeable. The pull felt lighter and crisper, with a cleaner break. I experienced no failures to ignite primers, even with a variety of ammunition types.
The installation was straightforward, although some gunsmithing knowledge is helpful. After swapping the spring, the difference was significant and positive. There were no unexpected issues.
Extended Use & Reliability
After several months of use, the Evolution Gun Works Main Hammer Spring ISMI has continued to perform admirably. I’ve put hundreds of rounds through my 1911 with this spring installed. It has maintained its consistent trigger pull and reliable ignition.
I have observed no signs of wear or tear on the spring. It still looks and feels as robust as it did on day one. Cleaning and maintenance are minimal; a quick wipe-down during routine firearm cleaning is all that’s required.
Compared to the factory spring, the Evolution Gun Works Main Hammer Spring ISMI is a clear upgrade. It delivers a superior trigger feel without sacrificing reliability. It has improved my shooting experience.
Breaking Down the Features of Evolution Gun Works Main Hammer Spring ISMI
Specifications
The Evolution Gun Works Main Hammer Spring ISMI is available in two options: 17lb and 19lb. This allows users to fine-tune their trigger pull weight. It is finished in a black color.
The spring is made from silicone chrome instead of traditional music wire. This enhances its durability and resistance to fatigue. The ISMI spring is heat treated, shot peened, and stress relieved. These processes further enhance its durability, consistency, and reliability.
These specifications are crucial for ensuring consistent and reliable performance. A durable spring translates to a longer lifespan and fewer failures. The consistent spring rate ensures a predictable trigger pull.
Performance & Functionality
The Evolution Gun Works Main Hammer Spring ISMI performs its job exceptionally well. It delivers a lighter, more consistent trigger pull. It maintains reliable primer ignition.
The spring’s strength lies in its consistent performance and durability. A potential weakness could be the need for some gunsmithing knowledge for installation. However, this is common with most firearm modifications.
The spring has exceeded my expectations. It has noticeably improved the trigger feel of my 1911. It has enhanced my shooting accuracy and enjoyment.
Design & Ergonomics
The spring itself is a simple, functional design. The silicone chrome material provides excellent durability. The black finish is understated and professional.
Installation requires some mechanical aptitude. However, the spring’s drop-in design makes it relatively user-friendly.
Durability & Maintenance
The Evolution Gun Works Main Hammer Spring ISMI is designed for long-term durability. The silicone chrome construction and specialized heat treatment contribute to its longevity.
Maintenance is minimal. Regular cleaning of the firearm is sufficient to keep the spring in good working order. No special cleaning or lubrication is required.
Accessories and Customization Options
The Evolution Gun Works Main Hammer Spring ISMI is a standalone component. It doesn’t require any specific accessories for functionality. However, it is often paired with other trigger components for a complete trigger job.
It is compatible with any 1911 or similar firearm that uses a standard mainspring housing. It works well with aftermarket hammers, sears, and disconnectors.
Pros and Cons of Evolution Gun Works Main Hammer Spring ISMI
Pros
- Improved Trigger Pull: The lighter spring weight provides a smoother, more consistent trigger pull.
- Enhanced Reliability: The ISMI spring material and heat treatment ensure reliable primer ignition.
- Increased Durability: Silicone chrome construction offers excellent resistance to wear and fatigue.
- Drop-In Installation: Relatively easy to install with basic gunsmithing knowledge.
- Cost-Effective Upgrade: An affordable way to significantly improve firearm performance.
Cons
- Requires Installation Knowledge: Basic gunsmithing skills are needed for installation.
- Potential for Light Strikes (17lb Option): In some firearms, the 17lb spring may cause light strikes with certain ammunition.
Who Should Buy Evolution Gun Works Main Hammer Spring ISMI?
The Evolution Gun Works Main Hammer Spring ISMI is perfect for 1911 owners seeking a smoother, more consistent trigger pull. It is also ideal for competitive shooters looking to enhance their accuracy. Anyone looking for increased reliability and durability in their firearm’s ignition system would benefit from this spring.
This product is not ideal for individuals uncomfortable with basic firearm disassembly and reassembly. Those who prioritize the heaviest possible trigger pull for safety reasons might want to skip this product.
A must-have modification is a complete trigger job using quality aftermarket components. This includes a match-grade hammer, sear, and disconnector, to fully realize the potential of the EGW hammer spring.
Conclusion on Evolution Gun Works Main Hammer Spring ISMI
The Evolution Gun Works Main Hammer Spring ISMI is a worthwhile upgrade for any 1911 owner looking to improve their trigger pull and overall firearm performance. Its use of high-quality ISMI springs ensures reliable ignition and long-term durability.
The price of $6.49 is extremely reasonable for the performance gains offered. It’s a small investment that can make a noticeable difference.
I would absolutely recommend the Evolution Gun Works Main Hammer Spring ISMI to anyone seeking a better trigger feel in their 1911. Upgrade your firearm today and experience the difference!