Let’s Talk About KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit is a straightforward upgrade designed to enhance the reliability and longevity of your M&P 15-22. This kit replaces the factory trigger and hammer pins with non-rotating pins, a popular modification to prevent pin walk-out, especially on polymer lower receivers. The KNS Precision kit offers a robust solution for a common problem in a simple, easy-to-install package.
I’ve seen a lot of M&P 15-22 rifles come through my shop with trigger pin issues, especially after higher round counts. The factory pins can sometimes back out, leading to malfunctions or even damage to the polymer lower. I was looking for a reliable, drop-in solution to preemptively address this potential problem for my own 15-22, and the KNS Precision kit seemed like a solid option.
Upon unboxing the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit, I was immediately impressed with the apparent quality of the components. The stainless steel pins felt substantial, and the black nitride treated sideplates looked clean and durable. The kit has a low profile design, making it barely noticeable after installation.
I considered other anti-walk pin kits on the market, including some from Timney and CMC Triggers. However, those options are geared towards standard AR-15 platforms, which is not what I need. The KNS Precision kit is specifically designed for the M&P 15-22 polymer receiver, which was the deciding factor for me.
My initial impression was positive. The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit appeared to be a well-made, practical upgrade that addressed a real concern. I was eager to get it installed and see how it performed at the range.
Real-World Testing: Putting KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit to the Test
First Use Experience
I installed the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit on my personal M&P 15-22, which I primarily use for recreational target shooting and small game hunting. My first range trip after installation was at an outdoor range in relatively dry conditions. The swap was smooth and easy and the pins stayed in place with no issues.
The KNS Precision pins made no noticeable difference in trigger pull or overall function, which is exactly what I wanted. The rifle functioned flawlessly through about 500 rounds of various .22LR ammunition, from cheap bulk ammo to higher-end target rounds. I experienced no pin walk, no malfunctions, and no other issues related to the trigger assembly.
The installation process took about 10 minutes with basic tools, requiring only a punch and a torque wrench. No time was needed to adjust to the new kit, as it did not change the existing components. The install was easy and successful.
There were no surprises during my first range trip; the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit performed exactly as advertised. The anti-walk pins stayed securely in place, providing peace of mind and preventing any potential problems down the road.
Extended Use & Reliability
After several months of use and thousands of rounds fired, the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit has proven to be a reliable and worthwhile upgrade. I’ve used the rifle in various conditions, including dusty environments and light rain, without any issues. The pins continue to hold securely, and I have not observed any signs of wear or loosening.
The black nitride finish on the sideplates has held up well, showing no signs of scratches or corrosion. I regularly clean and lubricate my M&P 15-22, and the KNS Precision pins require no special maintenance. A quick wipe-down with a lightly oiled cloth is all it takes to keep them in good condition.
Prior to installing the KNS Precision kit, I occasionally noticed the factory trigger pins starting to drift after extended shooting sessions. Now, it’s a worry of the past. The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit has significantly outperformed the factory pins in terms of reliability and peace of mind.
Breaking Down the Features of KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit
Specifications
- Manufacturer: KNS Precision.
- Gun Model: Smith & Wesson M&P 15-22, AR-15 (Note: Specifically designed for the polymer M&P 15-22 lower).
- Color: Black (Black Nitride Side Plates). Other colors are DuraCoated.
- Material: Stainless Steel Pins, Aluminum Side Plates.
- Additional Features: Non-rotating design, Mod 2 side plates.
- Torque Spec: 11 inch/lbs. MAXIMUM (Recommended 8 inch/lbs).
These specifications are critical because they ensure the kit is compatible with the M&P 15-22’s polymer receiver and provide enhanced durability. The stainless steel pins and black nitride finish offer superior corrosion resistance. The non-rotating design prevents pin walk-out.
Performance & Functionality
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit performs its intended function perfectly: it keeps the trigger and hammer pins securely in place. This prevents pin walk-out. This ensures consistent trigger function and overall reliability of the rifle.
The kit’s strength lies in its simplicity and effectiveness. It is a straightforward, drop-in upgrade that requires no gunsmithing or modification to the rifle. The only potential downside is the torque specification, which must be followed carefully to avoid damaging the sideplates or receiver.
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit meets and exceeds my expectations. It addresses a potential weakness in the M&P 15-22 design and provides a reliable, long-lasting solution.
Design & Ergonomics
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit features a low-profile design. The sideplates sit flush with the receiver. The materials used are of high quality, providing a solid feel without adding unnecessary weight.
The kit is incredibly user-friendly. Installation is simple and straightforward, requiring only basic tools and a few minutes of time. There is virtually no learning curve, as the kit does not alter the function or operation of the rifle.
Durability & Maintenance
The stainless steel pins and black nitride sideplates are designed to withstand significant wear and tear. Given the low-stress environment of the .22LR cartridge, the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit should last for many years with proper care. Regular cleaning and lubrication will help to prevent corrosion.
The KNS Precision kit is easy to maintain. A simple wipe-down with a lightly oiled cloth is all that’s needed to keep the pins and sideplates in good condition. There are no small or delicate parts that require special attention.
Accessories and Customization Options
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit does not come with any additional accessories beyond the pins and sideplates themselves. It is compatible with any trigger system designed for the M&P 15-22. This kit is not a customizable component.
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit works well with a variety of aftermarket triggers designed for the M&P 15-22. Ensure that any aftermarket trigger system is specifically designed for the M&P 15-22 polymer lower. Standard AR-15 triggers may not be compatible.
Pros and Cons of KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit
Pros
- Provides a reliable solution to prevent trigger pin walk-out on the M&P 15-22.
- Easy to install with basic tools.
- Durable stainless steel pins and black nitride sideplates offer excellent corrosion resistance.
- Low-profile design blends seamlessly with the rifle’s aesthetics.
- Relatively inexpensive upgrade compared to other aftermarket options.
Cons
- Torque specification must be followed carefully to avoid damage.
- Specifically designed for the M&P 15-22 polymer lower; not compatible with standard AR-15 lowers.
Who Should Buy KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit?
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit is perfect for M&P 15-22 owners who want to improve the reliability of their rifle and prevent trigger pin walk-out. It’s an excellent upgrade for high-volume shooters, competitive shooters, and anyone who relies on their M&P 15-22 for training or small game hunting.
This product might not be necessary for owners who have not experienced any issues with their factory trigger pins. It is an inexpensive upgrade. For those looking for enhanced performance, an upgraded trigger might be a better first investment.
A must-have accessory for installation is a torque wrench that measures in inch-pounds. Over-tightening the screws can damage the sideplates or the polymer receiver.
Conclusion on KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit
The KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit is a simple, effective, and affordable upgrade that addresses a potential weakness in the M&P 15-22 design. For under $40, it provides peace of mind and enhanced reliability, preventing trigger pin walk-out and ensuring consistent trigger function.
The price is definitely justified, especially considering the potential cost of repairing a damaged receiver or dealing with malfunctions caused by loose trigger pins. It’s a small investment that can pay off big in the long run.
I would personally recommend the KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit to any M&P 15-22 owner who wants to improve the reliability and longevity of their rifle. If you value reliability and hate the idea of your pins walking, do yourself a favor and pick up a KNS Precision Smith & Wesson M&P 15-22 Build-A-Kit today.