Bushmaster AR15 Marksman Lower Parts Kit Review

First Impressions of Bushmaster AR15 Marksman Lower Parts Kit

The AR-15 platform is known for its modularity, and the lower receiver is the foundation upon which everything else is built. Upgrading the lower parts is one of the easiest ways to significantly improve your rifle’s performance, and the Bushmaster AR15 Marksman Lower Parts Kit promises a boost in accuracy and feel. Bushmaster, a reputable name in the AR-15 world, aims to provide a drop-in solution for a more refined shooting experience with this kit.

I was looking for a way to improve the trigger pull on my budget AR build. The stock trigger was gritty and inconsistent, and I wanted something that would offer better control and accuracy for longer range shooting. This kit seemed like a cost-effective solution to achieving a more premium trigger feel without replacing the entire lower receiver.

The kit arrived in a simple, no-frills package. My initial impression was positive; all the components appeared to be well-machined and finished. Compared to a basic lower parts kit, the Bushmaster kit’s trigger stood out with its polished surfaces and more substantial feel.

While I also considered drop-in trigger assemblies from companies like Geissele, their higher price point pushed me toward a lower parts kit. The Bushmaster offering seemed like a good balance between affordability and performance improvement. Initial impressions left me cautiously optimistic and eager to get this kit installed and test it out.

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Real-World Testing: Putting Bushmaster AR15 Marksman Lower Parts Kit to the Test

First Use Experience

I installed the Bushmaster AR15 Marksman Lower Parts Kit on my AR-15 pistol lower and immediately took it to my local indoor shooting range. The lighting was good, and I was shooting off of a lead sled, so this was my best chance to evaluate this product objectively. I tested the kit with 5.56 NATO rounds.

The most noticeable difference was the dramatically improved trigger pull. The two-stage trigger had a smooth take-up, a distinct wall, and a crisp break. It was a huge improvement over the stock trigger. Initially, the hammer would occasionally not reset, and I had to adjust the trigger.

Extended Use & Reliability

After a few hundred rounds and several range sessions, the Bushmaster AR15 Marksman Lower Parts Kit has proven to be a solid upgrade. After my initial trigger reset issue was resolved, it held up perfectly, and provided good accuracy. There are no signs of significant wear and tear.

Cleaning and maintenance are standard; I simply wipe down the components with gun oil after each shooting session. Compared to my previous experience with a mil-spec trigger, this kit offers a much more refined and consistent shooting experience. It exceeded my expectations for a drop-in trigger kit.

Breaking Down the Features of Bushmaster AR15 Marksman Lower Parts Kit

Specifications

The Bushmaster AR15 Marksman Lower Parts Kit includes the Bushmaster DM2S 2-Stage trigger, pistol grip, trigger guard, safety selector, magazine catch assembly, bolt catch assembly, and all necessary springs, pins, and detents. The components are finished in black. It is designed for AR-15 platform rifles.

The two-stage trigger is the key feature. Its design allows for a lighter and smoother trigger pull, enhancing accuracy and reducing the likelihood of unintentional discharges. All the components, according to Bushmaster, are made in specialized factories.

Performance & Functionality

The Bushmaster AR15 Marksman Lower Parts Kit significantly improves the shooting experience by providing a smoother and more consistent trigger pull. The two-stage design allows for better control and accuracy, especially at longer ranges. However, I did experience initial reliability problems.

The Bushmaster kit’s strengths lie in its improved trigger performance and ease of installation. A potential weakness might be the durability of the springs and detents over extended use, but so far, they are fine. For me, it exceeds my expectation.

Design & Ergonomics

The kit’s components are well-machined and finished in a standard black color. The pistol grip has a comfortable texture and ergonomic design, promoting a secure and natural grip. The trigger’s smooth surfaces contribute to a more refined feel.

Installation is straightforward and can be accomplished with basic tools and some familiarity with AR-15 assembly. There’s a slight learning curve for adjusting the trigger.

Durability & Maintenance

The kit’s components appear to be durable and well-made. With proper cleaning and lubrication, I expect them to last for many years. Maintenance is standard, requiring only occasional cleaning and lubrication.

Accessories and Customization Options

The Bushmaster AR15 Marksman Lower Parts Kit is compatible with most standard AR-15 lower receivers. While it doesn’t come with specific accessories beyond the standard lower parts, you can easily customize the rifle with aftermarket grips, stocks, and other accessories. The compatibility with standard AR-15 components makes customization options vast.

Pros and Cons of Bushmaster AR15 Marksman Lower Parts Kit