Let’s Talk About KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins
The KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins are a simple yet effective upgrade for your AR-15 or M16 platform, designed to prevent pin rotation and “walking” – a common issue that can lead to premature wear and even functional problems. KNS Precision, a well-regarded name in the AR-15 aftermarket, offers these pins as a solution to ensure reliable trigger and hammer function, maintaining the integrity of your lower receiver.
I’ve seen too many AR builds suffer from creeping pins, especially after high round counts or with certain aftermarket triggers. I needed a reliable solution to protect my receivers and ensure consistent trigger performance, which led me to consider these pins. Upon unboxing, the KNS Precision pins felt robust and well-machined. The black nitride coating over stainless steel gave them a durable, professional look and felt reassuringly solid.
Compared to standard mil-spec pins or even some of the cheaper anti-walk pin sets, the KNS Precision stood out due to its robust construction and the anti-creep retainer design. I also considered the Wilson Combat anti-walk pins, but I favored the KNS Precision system due to its ease of installation and the positive user feedback I had encountered over the years. I also looked at some anti-rotation pins from Strike Industries, but wanted something that had the reputation that KNS Precision had.
My first impression was one of cautious optimism. While the pins themselves appeared well-made, I was curious to see if they would truly eliminate pin walk and if the installation would be as straightforward as advertised. I was definitely excited to try these out.
Real-World Testing: Putting KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins to the Test
First Use Experience
I tested the KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins at an outdoor range during a carbine course. The day included drills involving rapid firing, multiple target engagements, and simulated malfunctions. The weather was dry and dusty, presenting a reasonable challenge to the components of the rifle.
The pins installed easily with the included tool, and I noticed an immediate improvement in trigger feel – the trigger felt more solid and consistent throughout the course. I experienced zero pin walk or rotation throughout the day, even after several hundred rounds. Initially, I was concerned about over-torquing the screws, but following the recommended torque specification prevented any issues.
Extended Use & Reliability
After several months of regular use, including a few muddy and wet range sessions, the KNS Precision pins continue to perform flawlessly. There are no visible signs of wear or tear, and the black nitride finish has held up well against scratches and corrosion. Cleaning is simple – a quick wipe down with a cloth and some CLP is all that’s needed.
Compared to my previous experiences with standard pins that would occasionally walk out, especially with heavier trigger pulls, the KNS Precision pins have been a significant upgrade. My previous attempts at using standard mil-spec pins that were knurled or slightly oversized were a nightmare to remove for cleaning and maintenance, I am glad I went with KNS Precision. They have eliminated a recurring headache and given me greater confidence in the reliability of my AR platform.
Breaking Down the Features of KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins
Specifications
The KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins are constructed from stainless steel with a black nitride coating, providing exceptional strength and resistance to corrosion. This Gen 2 version is specifically designed with a .1555 diameter to fit POF Gen 3 and 4 receivers, as well as potentially other receivers with ambidextrous bolt releases. The pins include anti-creep retainers to prevent wear on the receiver and are secured with screws, preventing rotation and walkout.
The pins are manufactured in the USA and are designed for use with both AR-15 and M16 platforms. The included installation tool and two Torx wrenches simplify the installation process. These specifications are important because they directly impact the durability, reliability, and ease of use of the product.
Performance & Functionality
The KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins perform exceptionally well, effectively preventing pin rotation and walkout, even under heavy use. The pins enhance the stability and consistency of the trigger and hammer, improving overall shooting experience. The main strength is their ability to provide added security and peace of mind, especially when using aftermarket triggers with lighter pull weights.
While the installation is generally straightforward, ensuring the correct torque on the screws is crucial to avoid damaging the receiver. It meets and exceeds expectations, providing a reliable and robust solution to a common AR-15 problem.
Design & Ergonomics
The pins are designed with a focus on functionality and durability. The stainless steel construction and black nitride coating ensure long-lasting performance and corrosion resistance. The design is simple and effective, with the anti-creep retainers providing a secure fit without requiring permanent modifications to the receiver.
The weight of the pins is negligible, and they do not impact the overall balance or handling of the rifle. There is minimal learning curve involved.
Durability & Maintenance
The KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins are built to last. The stainless steel and black nitride coating offer excellent resistance to wear, corrosion, and environmental factors. Maintenance is minimal, typically only requiring occasional cleaning.
The robust construction suggests these pins will outlast many other components in the rifle, providing a long-term solution to pin walk issues.
Accessories and Customization Options
The set includes a pin installation tool and two Torx wrenches, providing everything needed for installation. While the pins themselves don’t offer extensive customization options, they are available in various colors to match or complement other components of the rifle. The .1555 diameter makes them compatible with specific receivers, primarily POF Gen 3 and 4.
They are also compatible with most aftermarket triggers, making them a versatile upgrade for a variety of AR-15 builds.
Pros and Cons of KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins
Pros
- Significantly reduces/eliminates trigger and hammer pin rotation and walkout.
- Increased reliability of trigger system with aftermarket triggers.
- Robust stainless steel construction with a durable black nitride finish for corrosion resistance.
- Easy installation with included tools.
- Compatible with a wide range of AR-15 and M16 platforms, especially POF Gen 3 and 4.
Cons
- Requires careful torque during installation to prevent damage to the receiver.
- .1555 diameter is not compatible with all receivers, may require research to ensure proper fitment.
Who Should Buy KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins?
These pins are perfect for AR-15 enthusiasts who want to ensure maximum reliability and longevity of their rifle’s trigger system. Especially beneficial for those using aftermarket triggers or experiencing pin walk with standard pins. It’s also a great upgrade for anyone building a new AR-15 and wanting to prevent future issues.
Those who should skip this product include individuals on a tight budget who are satisfied with the performance of their mil-spec pins. Or those who don’t have compatibility with the pin diameter. Must-have accessories or modifications would include a quality torque wrench to ensure proper installation.
Conclusion on KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins
The KNS Precision AR15/M16 .1555 Diameter Gen 2 Non-Rotate Trigger/Hammer Pins are a worthwhile investment for any serious AR-15 owner looking to improve the reliability and longevity of their firearm. The price is justified by the quality of the materials, the effectiveness of the design, and the peace of mind they provide.
I would personally recommend these pins to anyone building or upgrading an AR-15. Don’t let creeping pins ruin your range day. Invest in the KNS Precision pins and enjoy a more reliable and consistent shooting experience.