Guntec USA AR-15 A2 Rifle Stock Tube Kit Review

Deep Dive into the Guntec USA AR-15 A2 Rifle Stock Tube Kit

When building or upgrading an AR-15 platform rifle, the stock assembly is a critical component that directly impacts ergonomics and functionality. The Guntec USA AR-15 A2 Rifle Stock Tube Kit presents itself as a foundational piece for achieving a rifle-length stock setup. This kit includes the buffer tube, buffer spring, and buffer itself, essential elements for proper operation and recoil management.

My need for this specific kit arose from a project where I was converting a carbine-length AR-15 to a rifle-length configuration for a more traditional feel and potentially improved ballistic characteristics in certain applications. While exploring options, I came across this Guntec USA offering, which seemed to cover the necessary components in a single package, simplifying the procurement process. I had considered assembling the parts individually from different manufacturers, but the convenience of a complete kit, especially at a reasonable price point, was appealing. My initial impression upon unboxing was one of practical utility; the components appeared functional, though the finish on some elements warranted closer inspection.

Real-World Testing: Putting Guntec USA AR-15 A2 Rifle Stock Tube Kit to the Test

First Use Experience

My testing environment was primarily my home workshop and then the shooting range for functional testing. I assembled the kit onto a stripped AR-15 lower receiver, intending to pair it with a fixed A2 stock. The installation was straightforward, with the buffer tube threading into the receiver smoothly, and the spring and buffer seating without issue.

During initial cycling of the bolt carrier group, the components functioned as expected, with the spring compressing and the buffer engaging properly within the tube. I paid close attention to any binding or extraneous noise, but none were immediately apparent. The true test, however, came during live fire. I conducted tests with various ammunition types, from standard M193 ball to some heavier hunting rounds.

Extended Use & Reliability

After several range sessions and hundreds of rounds through the rifle, the Guntec USA AR-15 A2 Rifle Stock Tube Kit has held up adequately, with a few caveats. The buffer tube itself shows no signs of significant wear, maintaining its finish and thread integrity. The buffer also performs its intended function of absorbing recoil.

However, the buffer spring has been the focal point of concern. The user feedback mentioning a non-stainless steel spring with a coating was indeed accurate. Upon closer inspection after several hundred rounds, I noticed some minor flaking of the coating on the spring, particularly where it contacts the buffer and the inside of the buffer tube. This is not ideal, as it exposes the base metal to potential corrosion and could, over a very long period, lead to premature spring fatigue or failure.

Maintenance has been relatively simple. A quick wipe-down of the buffer tube and buffer during routine cleaning is all that’s required for these components. The spring, however, now necessitates a more careful check for coating integrity. Compared to higher-end kits that utilize genuine stainless steel springs and often nitrided or hardcoat anodized buffer tubes, this kit falls into a more budget-friendly category, and its longevity might be commensurate with that positioning.

Breaking Down the Features of Guntec USA AR-15 A2 Rifle Stock Tube Kit

Specifications

The Guntec USA AR-15 A2 Rifle Stock Tube Kit includes the following key components:

• A2 Buffer Tube: Constructed from T6 6061 Aluminum, this tube is designed for a rifle-length stock configuration. Its construction is standard for AR-15 buffer tubes, providing a durable housing for the buffer and spring.
• Rifle Length Buffer Spring: This is the component that provides the energy to return the bolt carrier group forward after firing. The user feedback indicates this is not a stainless steel spring but rather a coated metal spring, a detail that warrants attention.
• A2 Buffer: The buffer is a weighted component that strikes the rear of the receiver extension to absorb residual recoil energy. The A2 buffer is typically heavier than a carbine buffer, contributing to a softer shooting experience with a rifle-length system.

The T6 6061 Aluminum construction of the buffer tube is a common and reliable choice in the AR-15 world, offering a good balance of strength and weight. The rifle-length design is specifically intended for fixed stocks, providing a stable platform. The main specification of concern is the material and finish of the buffer spring, which, based on observed wear, appears to be a coated steel rather than stainless steel. This could impact its long-term corrosion resistance and potentially its lifespan compared to more robust alternatives.

Performance & Functionality

In terms of its primary function, the Guntec USA AR-15 A2 Rifle Stock Tube Kit performs adequately. The buffer tube installs correctly, and the buffer and spring work in concert to facilitate the cycling of the firearm. Recoil impulse felt during live fire was manageable and consistent with what one would expect from a rifle-length AR-15 setup.

The main area where this kit falls short of expectations is in the quality of the buffer spring. The observed coating peeling is a clear indicator of a compromise in material or manufacturing process. While it functions initially, this raises concerns about its long-term reliability and durability, especially in harsh environments or under heavy use.

Design & Ergonomics

The design of this kit is utilitarian and standard for an AR-15 A2 rifle stock assembly. The buffer tube features the correct threading and length for a rifle stock, and its black finish is consistent. The A2 buffer is a straightforward, solid piece.

Ergonomically, once installed, the kit becomes part of the rifle’s overall feel. The rifle-length setup generally offers a more comfortable length of pull for many shooters compared to carbine stocks, and this kit facilitates that. The primary design “quirk,” if you can call it that, is the finish on the buffer spring, which is an aesthetic and functional concern rather than an ergonomic one.

Durability & Maintenance

The durability of the buffer tube itself appears to be good, leveraging the inherent toughness of T6 6061 Aluminum. The buffer also seems robust. The significant concern regarding durability lies with the rifle length buffer spring. The peeling coating suggests that this component might not withstand prolonged exposure to elements or extensive use as well as a stainless steel alternative.

Maintenance is simple for the tube and buffer, requiring only periodic cleaning. For the spring, however, it’s advisable to inspect it for further coating degradation after each cleaning or range session. If extensive peeling occurs, replacement with a higher-quality stainless steel spring would be a prudent step to ensure sustained reliability.

Accessories and Customization Options

The Guntec USA AR-15 A2 Rifle Stock Tube Kit is a foundational component; it’s not typically sold with a wide array of accessories. The kit includes the essential parts: the buffer tube, the spring, and the buffer.

Customization options directly related to this kit are minimal beyond selecting a compatible A2 fixed stock. However, it is important to note that this buffer tube is designed to accept standard AR-15 rifle-length stocks. The primary “upgrade” or customization one might consider after purchasing this kit would be to replace the provided buffer spring with a premium, non-coated stainless steel variant if long-term reliability is paramount.

Pros and Cons of Guntec USA AR-15 A2 Rifle Stock Tube Kit

Who Should Buy Guntec USA AR-15 A2 Rifle Stock Tube Kit?

This Guntec USA AR-15 A2 Rifle Stock Tube Kit is best suited for the budget-conscious builder or shooter who is assembling a rifle-length AR-15 and prioritizes cost savings for foundational components. It’s a good option for those who understand the potential compromise with the buffer spring and are prepared to upgrade it down the line if necessary. This kit would appeal to home builders on a strict budget or those looking for a functional, albeit not premium, option for a rifle that won’t be subjected to extreme environmental conditions or continuous, high-volume firing.

Those who should skip this product are individuals who demand the utmost reliability and longevity from their components out of the box. Shooters who plan on operating in harsh conditions, or those who simply prefer to have peace of mind with higher-quality materials like genuine stainless steel buffer springs, should look towards more premium offerings. A must-have complementary item, if you are not already confident in the spring, would be a high-quality, non-coated stainless steel rifle-length buffer spring from a reputable manufacturer.

Conclusion on Guntec USA AR-15 A2 Rifle Stock Tube Kit

The Guntec USA AR-15 A2 Rifle Stock Tube Kit presents a mixed bag. On one hand, it delivers a complete set of essential parts for establishing a rifle-length AR-15 stock configuration at a very attractive price point. The buffer tube and buffer themselves are of acceptable quality for general use.

However, the significant drawback lies with the included buffer spring. The visible wear and peeling coating suggest a compromise in material quality that could impact long-term performance and reliability. While it functions, it’s a component that might require replacement sooner rather than later for those seeking maximum dependability.

Ultimately, I would recommend this kit with a caveat: purchase it if your budget is the primary constraint, and be prepared to invest in a better quality buffer spring separately. For builders prioritizing immediate, unquestionable reliability and premium materials, exploring other options might be a wiser decision. If you’re looking for a starting point and are willing to perform a small upgrade, this kit can serve its purpose.