The Smith & Wesson M&P 15 Sport 2: A Rifle Ready for Upgrades
The Smith & Wesson M&P 15 Sport 2 has solidified its place as a popular choice in the AR-15 market. Known for its reliability, affordability, and ease of use, it’s an excellent entry point into the world of AR-15 ownership. But, like any platform, the M&P 15 Sport 2 offers a wealth of opportunities for customization and improvement. One of the most impactful upgrades you can make is swapping out the original gas block for a Low Profile Gas Block for M&P 15 Sport 2. This seemingly small change can unlock significant benefits in terms of both aesthetics and functionality.
Why a Low Profile Gas Block Matters
The gas block plays a crucial role in the AR-15’s operation. It channels the expanding gases from the fired round to the gas tube, which in turn drives the bolt carrier group, enabling the rifle to cycle, load the next round, and prepare for the following shot. The standard gas block found on the M&P 15 Sport 2 is perfectly functional, designed to reliably operate the rifle in its original configuration. However, the design of a standard gas block often limits your options when it comes to customization. This is where the Low Profile Gas Block for M&P 15 Sport 2 shines.
The primary advantage of using a low profile gas block is the increased clearance it provides. This is particularly important if you’re looking to upgrade your handguard. Many modern handguards are designed to extend further down the barrel, providing a longer grip and enhanced aesthetics. A low profile gas block sits much lower on the barrel compared to the standard block, allowing these free-float handguards to be installed without obstruction. This clearance is essential to the proper installation and function of these often sought-after modifications.
The benefits extend beyond simply accommodating a new handguard. Free-float handguards are renowned for their potential to improve accuracy. By not touching the barrel, these handguards prevent any external forces from affecting the barrel’s natural harmonics during firing. This can translate into tighter groupings on the target and an overall enhanced shooting experience.
Beyond pure functionality, a Low Profile Gas Block for M&P 15 Sport 2 offers an aesthetic upgrade. The low-profile design is sleeker and more streamlined, blending seamlessly with the barrel and handguard. This can drastically improve the overall appearance of the rifle, giving it a more modern and tactical look. The often hidden or sleek nature of these blocks also provides an extra air of customizability.
Making the Right Choice: What to Consider
Choosing the best Low Profile Gas Block for M&P 15 Sport 2 is an important decision. There are several crucial factors to consider to ensure optimal performance and reliability.
Material Matters
One of the first considerations is the material used in constructing the gas block. You’ll primarily encounter two materials: steel and aluminum.
Steel gas blocks are known for their superior durability and resistance to heat. They’re incredibly robust and can withstand the harsh conditions of repeated firing. The downside of steel is its weight. Steel gas blocks tend to be heavier than their aluminum counterparts, which can slightly increase the overall weight of your rifle. However, for most shooters, the added durability outweighs the difference in weight.
Aluminum gas blocks offer a lighter alternative. This is especially attractive to those aiming to reduce the overall weight of their rifle. Aluminum is also excellent at dissipating heat, which is a positive attribute in a high-stress component like the gas block. However, aluminum is not as durable as steel, and some may be more susceptible to wear and tear over time. This can make the quality of construction paramount.
Mounting Options
The method by which the gas block attaches to the barrel is another important consideration.
The most common design is the set screw system. Set screw gas blocks are relatively easy to install and typically feature one or more set screws that tighten directly onto the barrel. This system offers a cost-effective and straightforward installation process. However, it is important to ensure the set screws are properly tightened and that the barrel is thoroughly degreased to prevent the gas block from potentially shifting during firing. High-quality set screw gas blocks often utilize multiple set screws and a thread-locking compound to ensure secure fit.
Clamp-on gas blocks provide an alternative mounting style. These blocks utilize a clamp that wraps around the barrel, securing the gas block from all sides. Clamp-on designs are often considered the most secure option. They typically require a more involved installation process but offer excellent stability and are less prone to shifting under the stresses of firing.
Gas Port Diameter: Precision is Key
The gas port is the hole in the gas block that channels the gas from the barrel. When selecting a Low Profile Gas Block for M&P 15 Sport 2, it’s crucial to consider the gas port diameter. The port’s size affects the rifle’s gas system’s pressure and functionality.
Matching the port size to the specific requirements of your rifle is essential. If the gas port is too small, the rifle might not cycle reliably. If it’s too large, the rifle may experience excessive recoil and other issues. While many low profile gas blocks come with standardized port sizes, some offer adjustable options, which allows you to fine-tune the gas system and optimize performance for your specific load and shooting style. Often, the best practice is to seek the advice of a gunsmith.
Finish Matters for Appearance and Durability
The finish of a Low Profile Gas Block for M&P 15 Sport 2 plays a role in both aesthetics and durability. Common finish options include:
- **Matte Black:** A popular and versatile finish that complements most AR-15 builds. It provides a non-reflective surface, which is ideal for tactical applications.
- **Anodizing:** A durable finish that increases the gas block’s resistance to wear, corrosion, and heat. Anodized finishes are available in various colors, allowing for further customization.
- **Other coatings:** Some gas blocks feature proprietary coatings that offer enhanced durability and performance.
Brand Recommendations: Finding the Right Fit
Numerous reputable brands offer high-quality low profile gas blocks. It’s essential to research and select a brand known for its reliability and commitment to quality. Here are some brands to consider when looking for a Low Profile Gas Block for M&P 15 Sport 2:
- **SLR Rifleworks:** SLR is known for its high-quality, precision-engineered gas blocks. Their products are often regarded for their durability and performance.
- **Geissele Automatics:** Geissele is a premium brand that produces top-of-the-line AR-15 components. Their gas blocks are known for their robust construction and reliability.
- **Aero Precision:** Aero Precision offers a great balance of quality and affordability. Their gas blocks provide excellent performance at a competitive price point.
- **Superlative Arms:** Superlative Arms is known for their adjustable gas blocks, which allow shooters to fine-tune the gas system for optimal performance.
Installation and Getting it Done
The installation process of a Low Profile Gas Block for M&P 15 Sport 2 is usually straightforward, but always consult with a qualified gunsmith if you are uncertain about any aspect of the process. Before starting, ensure you have the necessary tools: a set of Allen wrenches (often included with the gas block), a hammer, and punches.
First, ensure the rifle is unloaded and the barrel is clear. Remove the existing handguard, which typically involves removing the delta ring and handguard cap. Next, you’ll need to remove the existing gas block. Carefully remove the set screws (if present) or loosen the clamp (if using a clamp-on design). Slide the old gas block off the barrel, and clean the barrel surface thoroughly.
Install the new low profile gas block. If using a set screw design, align the gas block with the gas port on the barrel and tighten the set screws using the manufacturer’s recommendations. If using a clamp-on design, position the gas block and tighten the clamp screws. Finally, reassemble the handguard.
It is always recommended to seek a professional for installation, if you do not have the experience or specialized tools.
Testing and Tuning: Ensuring Proper Function
After installing your new Low Profile Gas Block for M&P 15 Sport 2, it’s crucial to test and ensure proper function.
Check for reliable cycling. Fire several rounds of your chosen ammunition and ensure the bolt cycles completely, ejecting the spent casing and chambering a new round. If you encounter any issues, such as failures to feed or eject, it’s vital to investigate the cause.
Pay attention to brass ejection patterns. An ideal ejection pattern indicates the rifle is operating smoothly. Ejection patterns that are too far forward or too far back could suggest over-gassing or under-gassing, respectively. Adjusting the gas port diameter or using an adjustable gas block may be necessary to fine-tune the system.
Conclusion: Enhance Your Rifle’s Potential
Upgrading to a Low Profile Gas Block for M&P 15 Sport 2 is a worthwhile investment that can significantly enhance the appearance, functionality, and accuracy of your rifle. Whether you’re looking to install a free-float handguard, improve the aesthetics, or optimize the rifle’s performance, this upgrade is a great place to start. Consider the factors mentioned above, choose a quality gas block from a reputable brand, and follow the installation instructions carefully. By taking these steps, you can transform your M&P 15 Sport 2 into a more versatile and enjoyable platform.
As you explore the world of upgrades, remember to prioritize safety and always handle firearms responsibly. Research and select the components that best suit your needs and shooting style. With the right upgrades, your M&P 15 Sport 2 can become a truly personalized and high-performing rifle. Start your upgrade journey today and discover the full potential of your M&P 15 Sport 2!
