Let’s Dive into Kleen Bore Accu-Wedge AR-15/M16 Buffer System
The Kleen Bore Accu-Wedge AR-15/M16 Buffer System is a simple, inexpensive polymer wedge designed to eliminate play between the upper and lower receivers of an AR-15 or M16 rifle. This little piece promises to tighten up your rifle and improve the overall feel. The product made by Kleen Bore, a well-known name in firearm maintenance and accessories, aims to solve the common problem of receiver wobble that can plague even high-end AR builds.
After years of building and tinkering with ARs, I was constantly looking for ways to improve the platform’s inherent characteristics. I wanted a solution for the sometimes-annoying upper/lower receiver wobble, and this seemed like a budget-friendly way to give it a try. My rifles are more than just range toys; they’re tools I rely on in training and competition, and even a small improvement in feel and stability can translate to better performance.
Upon receiving the Accu-Wedge, my initial impression was that it was deceptively simple. It’s a small, slightly flexible piece of polymer that appears to fit snugly into the lower receiver, right behind the takedown pin. The material seemed durable enough, but I did wonder how well it would hold up under repeated use and the constant vibration of firing.
I considered other solutions like shims or accurizing pins, but I chose the Kleen Bore Accu-Wedge because of its ease of installation and low cost. Solutions such as the JP Enterprises Tensioning Pin Kit are considerably more expensive and require more extensive installation. The Accu-Wedge seemed like a good first step to see if I could get the desired results without breaking the bank.
My first impression was cautiously optimistic. It seemed like a simple fix for a common problem, and I was eager to see if it would live up to the hype.
Real-World Testing: Putting Kleen Bore Accu-Wedge AR-15/M16 Buffer System to the Test
First Use Experience
I tested the Kleen Bore Accu-Wedge AR-15/M16 Buffer System at my local outdoor shooting range on a clear, sunny day. I installed it in my primary AR-15, a custom build with an Anderson Manufacturing lower and a Ballistic Advantage upper. After initial installation, I immediately noticed it was too thick to allow the receivers to close together.
I had to trim the wedge considerably with a utility knife before I could even begin to close the receivers. After some trial and error, I got the Accu-Wedge to fit snugly. I tested a variety of ammunition, from cheap bulk 55-grain FMJ to match-grade 77-grain BTHP.
The initial results were promising. The wobble between the upper and lower was noticeably reduced, and the rifle felt more solid. I did, however, find that closing the receivers required significantly more force than before, and removing the rear takedown pin was nearly impossible without a punch.
Extended Use & Reliability
After several weeks of use and multiple range trips, the Kleen Bore Accu-Wedge held up surprisingly well. There were no signs of significant wear and tear, although the polymer did seem to compress slightly over time. This required me to occasionally push it back into place to maintain the desired level of tension.
Cleaning and maintenance were simple; I just wiped it down with a cloth when I cleaned the rest of the rifle. However, I did find that the increased difficulty in separating the receivers made cleaning the chamber and BCG slightly more cumbersome. Overall, the Kleen Bore Accu-Wedge maintained its functionality, but the initial stiffness of takedown remained.
Compared to my previous experience without any receiver tightening device, the Kleen Bore Accu-Wedge definitely improved the overall feel of the rifle. It didn’t completely eliminate all movement, but it made a noticeable difference.
Breaking Down the Features of Kleen Bore Accu-Wedge AR-15/M16 Buffer System
Specifications
The Kleen Bore Accu-Wedge AR-15/M16 Buffer System is a simple polymer wedge designed to fit in the lower receiver of an AR-15 or M16 rifle, behind the rear takedown pin. It is designed to reduce or eliminate play between the upper and lower receivers. The wedge weighs next to nothing, adding virtually no weight to the rifle.
The material is a semi-rigid polymer that can be easily trimmed to achieve the desired fit. This adjustability is key, as AR-15 receiver tolerances can vary widely between manufacturers.
Performance & Functionality
The Kleen Bore Accu-Wedge performs its intended function reasonably well. It reduces receiver wobble, which can contribute to a more stable and consistent shooting platform. This increased stability can improve the overall shooting experience and potentially enhance accuracy, especially during rapid fire.
The primary weakness is that it often requires modification to fit properly, and even with modification, it can make takedown and reassembly more difficult. Some users may find the increased tension on the takedown pins to be a worthwhile trade-off for reduced wobble, while others may find it too cumbersome.
The Accu-Wedge mostly met my expectations. It reduced the wobble, but the installation and takedown process was more difficult than I anticipated.
Design & Ergonomics
The design of the Kleen Bore Accu-Wedge is simple and functional. The material is adequate, but not exceptional. The wedge is easy to install (after trimming), but the increased tension on the takedown pins can make disassembly more difficult.
The Accu-Wedge does not significantly alter the ergonomics of the rifle, aside from the aforementioned difficulty with takedown. It’s a discreet addition that doesn’t interfere with normal operation.
Durability & Maintenance
The polymer material seems reasonably durable, and I expect it to last for a decent amount of time with normal use. Regular cleaning is not necessary, as the wedge is not exposed to any significant amount of fouling.
Replacement is easy and inexpensive should the wedge become damaged or worn. Installation requires no special tools, although a utility knife or sandpaper is helpful for trimming.
Accessories and Customization Options
The Kleen Bore Accu-Wedge does not come with any accessories, nor does it require any. It’s a standalone product designed to work with the existing components of an AR-15 rifle.
It is compatible with virtually all AR-15 lowers, although, as previously mentioned, some degree of fitting may be required. It does not interfere with any other aftermarket accessories, such as grips, stocks, or triggers.
Pros and Cons of Kleen Bore Accu-Wedge AR-15/M16 Buffer System
Pros
- Significantly reduces or eliminates play between upper and lower receivers.
- Inexpensive and easy to install (with minor modification).
- Simple design that does not interfere with other components.
- Increases the overall feeling of solidity and stability of the rifle.
- Can potentially improve accuracy by providing a more stable shooting platform.
Cons
- Often requires trimming or modification to fit properly.
- Can make takedown and reassembly more difficult.
- May compress over time, requiring occasional adjustment.
Who Should Buy Kleen Bore Accu-Wedge AR-15/M16 Buffer System?
The Kleen Bore Accu-Wedge is perfect for budget-conscious AR-15 owners who want to improve the feel of their rifle without spending a lot of money. It’s also a good option for those who are comfortable with minor gunsmithing tasks, as some fitting may be required. It is ideal for recreational shooters, weekend warriors, and anyone who wants to tighten up their AR.
This product is not ideal for those who prioritize ease of takedown and reassembly above all else. Also, if you are someone who is unwilling to perform minor modifications, this might not be a good product for you. High-precision builds might benefit more from more expensive, more precise solutions.
No must-have accessories are needed but a sharp utility knife or sandpaper makes installation easier.
Conclusion on Kleen Bore Accu-Wedge AR-15/M16 Buffer System
The Kleen Bore Accu-Wedge AR-15/M16 Buffer System is a decent, budget-friendly solution for tightening up the receiver fit on an AR-15 rifle. Its simple design and low price make it an attractive option for those looking to improve the feel of their rifle without breaking the bank. However, the need for trimming and the potential for increased difficulty in takedown are factors to consider.
The value proposition is definitely there. For under $10, you get a noticeable improvement in the feel of your rifle.
I would personally recommend the Kleen Bore Accu-Wedge to anyone looking for a cheap and easy way to address receiver wobble on their AR-15. Just be prepared to do a little bit of trimming, and don’t be surprised if takedown becomes a bit more challenging. If you’re ready to take that small step, this simple wedge might just make your AR feel like a whole new rifle. Give it a try and see if it makes a difference for you!