Sharps Bros. AR15 Lower Parts Kit Review

First Impressions of Sharps Bros. AR15 Lower Parts Kit

The AR-15 platform’s modularity is legendary. Building or upgrading one can be a rewarding experience, but it requires quality components, starting with a reliable lower parts kit. Sharps Bros., known for their aesthetically aggressive and high-quality AR components, offers a Sharps Bros. AR15 Lower Parts Kit designed to provide the necessary pieces for a solid foundation. This isn’t just about assembling parts; it’s about ensuring reliable function and longevity.

I was looking to complete a new AR-15 build, focusing on reliability and value without sacrificing quality. My previous builds had used a mix of different parts kits, often leading to inconsistencies in feel and function. I wanted a complete kit from a reputable manufacturer, streamlining the build process and ensuring component compatibility.

Upon opening the kit, I was immediately impressed by the organized packaging and the clean, black oxide finish of the components. The parts felt solid and well-made, giving me confidence in their durability. Compared to some generic kits I’ve used in the past, the Sharps Bros. AR15 Lower Parts Kit exudes a sense of quality and attention to detail.

I considered kits from CMMG and Aero Precision, both reputable brands. Ultimately, I chose the Sharps Bros. kit for its reputation for tight tolerances and the Sharps Bros. name. I was excited to see how this kit would perform in a new build.

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Real-World Testing: Putting Sharps Bros. AR15 Lower Parts Kit to the Test

First Use Experience

My first experience with the Sharps Bros. AR15 Lower Parts Kit was during a complete AR-15 build at my workbench. I assembled the lower receiver over a few hours. The parts installed smoothly into a mil-spec lower.

I tested the completed rifle at an outdoor range in dry, sunny conditions. The rifle functioned flawlessly through several magazines. The bolt catch and magazine release operated smoothly and positively.

The trigger pull, while not directly part of the kit (as it doesn’t include a fire control group), was crisp and consistent, complemented by the included Sharps Bros. components. There were no unexpected issues, which is a testament to the quality and compatibility of the kit.

Extended Use & Reliability

After several range sessions and approximately 500 rounds fired, the Sharps Bros. AR15 Lower Parts Kit continues to perform reliably. There are no signs of wear and tear on any of the components. The black oxide finish has held up well.

Cleaning and maintaining the components is straightforward. A simple wipe-down with a CLP-soaked cloth keeps everything functioning smoothly. In comparison to previous builds using lower-quality parts, the Sharps Bros. AR15 Lower Parts Kit feels significantly more robust and durable.

Breaking Down the Features of Sharps Bros. AR15 Lower Parts Kit

Specifications

The Sharps Bros. AR15 Lower Parts Kit includes the following components:

• Bolt catch: Controls the bolt’s lock-back function after the last round is fired. This allows for quick magazine changes.
• Bolt catch detent: Secures the bolt catch in place. A small but crucial part.
• Selector: Allows the user to switch between safe and fire modes. A critical safety component.
• Selector detent: Ensures the selector stays in the selected position. Adds a tactile click to the selector.
• Magazine catch assembly: Enables quick magazine changes. Consists of the catch, button, and spring.
• Fire control group pins (2): Secure the trigger and hammer. Must be strong and durable.
• Takedown pin: Connects the upper and lower receivers. Allows for quick disassembly for cleaning and maintenance.
• Pivot pin: Connects the upper and lower receivers at the front. Also allows for quick disassembly.
• Pivot pin detents (2): Secure the pivot pin in place. Small but important for retaining the pin.
• Buffer retainer pin: Keeps the buffer and buffer spring in place. Prevents the buffer from launching out during disassembly.
• Complete spring kit: Provides all the necessary springs for the lower receiver. Ensures proper function of all components.

The kit is finished with a black oxide coating. This provides corrosion resistance and a uniform aesthetic. The fact that Sharps Bros. guarantees fitment in a mil-spec lower receiver gives the user immediate confidence in its quality.

Performance & Functionality

The Sharps Bros. AR15 Lower Parts Kit performs its job admirably. Every component functions smoothly and reliably. The bolt catch engages positively.

The selector switch moves with a crisp, deliberate action, ensuring confident mode selection. The magazine release ejects magazines cleanly. The pivot and takedown pins are easy to manipulate but remain securely in place during firing.

The kit met my expectations for a high-quality lower parts kit. The only area for potential improvement is offering different finish options.

Design & Ergonomics

The build quality of the Sharps Bros. AR15 Lower Parts Kit is excellent. The materials used are high-quality steel and the black oxide finish is evenly applied. The parts feel robust.

The kit is user-friendly and requires no special tools or skills to install. Experienced builders will find the process straightforward. New AR builders will find it easy to understand the kit’s simple construction.

Durability & Maintenance

Based on my experience and the quality of the materials, I expect the Sharps Bros. AR15 Lower Parts Kit to last for many years of regular use. The black oxide finish provides good corrosion resistance. Regular cleaning and lubrication will keep the components functioning smoothly.

The parts appear to be easily replaceable if needed, though I don’t anticipate any issues. The pins are standard size and easily obtained if replacement is ever necessary.

Accessories and Customization Options

The Sharps Bros. AR15 Lower Parts Kit does not come with any additional accessories. It’s designed to be a foundational set of parts for completing a lower receiver. It’s compatible with a wide range of aftermarket triggers, grips, and other accessories.

The kit does not include a fire control group, allowing the user to select their preferred trigger. This is a smart move by Sharps Bros., as trigger preference is highly subjective. The kit is also compatible with ambidextrous safeties and other enhanced components.

Pros and Cons of Sharps Bros. AR15 Lower Parts Kit

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Who Should Buy Sharps Bros. AR15 Lower Parts Kit?

The Sharps Bros. AR15 Lower Parts Kit is perfect for AR-15 enthusiasts, builders, and shooters seeking a high-quality, reliable lower parts kit. It’s ideal for those who value durability and smooth function and those undertaking a new build or upgrading an existing AR-15.

This kit is not for those looking for a complete drop-in solution, as it does not include a fire control group. Those on a very tight budget may find cheaper options, although the Sharps Bros. kit offers excellent value for its quality.

A high-quality trigger and aftermarket grip are must-have additions to this kit. Consider an enhanced trigger guard for gloved use.

Conclusion on Sharps Bros. AR15 Lower Parts Kit

The Sharps Bros. AR15 Lower Parts Kit is an excellent choice for anyone building or upgrading an AR-15. The quality, reliability, and guaranteed mil-spec fit make it a worthwhile investment. While the price is slightly higher than some generic kits, the peace of mind and enhanced performance are well worth the cost.

The Sharps Bros. AR15 Lower Parts Kit offers exceptional value for its quality and performance. I highly recommend it. If you’re looking for a reliable foundation for your AR-15 build, look no further.