Understanding Heat Shields
What is a Heat Shield?
The Mossberg 590 shotgun holds a special place in the hearts of firearm enthusiasts and professionals alike. Known for its rugged reliability, simple operation, and potent stopping power, it’s a weapon that has served admirably in various roles, from home defense to law enforcement. But with great power comes great heat. That’s where the Mossberg 590 heat shield enters the equation, becoming a critical accessory for safe and effective operation. This article dives deep into the world of Mossberg 590 heat shields, offering a comprehensive guide to understanding their purpose, the types available, how to install them, and how to maintain them, ensuring you’re well-equipped to make an informed decision for your own shotgun.
Why is a Heat Shield Necessary on a Shotgun?
At the heart of any discussion surrounding a Mossberg 590 heat shield lies a fundamental question: What exactly is it, and why is it needed? A heat shield, in its simplest form, is a protective barrier designed to reduce the amount of heat a shooter is exposed to when operating a firearm, particularly a shotgun. During firing, the barrel of a shotgun, especially one chambered for powerful loads, can reach incredibly high temperatures. This heat is a byproduct of the combustion that occurs inside the chamber when the round is discharged. The expanding gases, friction, and the heat generated by the burning propellant all contribute to the rapid rise in barrel temperature.
The heat shield’s primary function is to act as a thermal insulator, drawing heat away from the shooter’s hands and preventing direct contact with the scorching barrel. The shield itself absorbs some of the heat, then dissipates it into the surrounding air, reducing the risk of burns, discomfort, and potentially compromised grip. The design of a heat shield is critical to its effectiveness. Different types employ varying methods for heat dissipation, from simple air gaps to complex ventilation designs. The material used also greatly influences the shield’s performance.
So, why is a heat shield considered necessary, even crucial, on a shotgun like the Mossberg 590? The answer lies in the potential dangers posed by a hot barrel. Imagine firing several rounds rapidly. The barrel quickly becomes too hot to touch comfortably, and in some cases, it can lead to severe burns if accidental contact occurs. Even without direct contact, the radiated heat can make handling the weapon difficult and uncomfortable, potentially leading to a compromised grip, slower follow-up shots, and increased fatigue.
Beyond the immediate safety concerns, a hot barrel can also negatively impact the shooter’s performance. The discomfort can lead to flinching, which in turn affects accuracy. A proper grip, the cornerstone of accurate shooting, becomes difficult to maintain with a barrel radiating intense heat. Therefore, a Mossberg 590 heat shield enhances both safety and the overall shooting experience. It provides a layer of protection, allowing the shooter to maintain a solid grip, focus on the target, and operate the shotgun effectively even during extended firing sessions. The addition of a heat shield is a prudent investment in safe and comfortable operation.
Types of Mossberg 590 Heat Shields
The world of Mossberg 590 heat shields isn’t a one-size-fits-all affair. Several different types cater to various preferences and needs. Choosing the right one involves understanding the different options available and their respective benefits and drawbacks.
Full Length Heat Shields
One popular option is the full-length heat shield. This design typically extends along the entire length of the barrel, offering maximum coverage. The advantage of a full-length shield is its comprehensive protection, minimizing the risk of accidental contact with any part of the hot barrel. They often present a more tactical, aggressive appearance that many shooters appreciate. However, full-length shields can potentially complicate sight acquisition if they obscure or obstruct the sights. Installation can sometimes be slightly more involved than with shorter designs.
Short/Partial Heat Shields
An alternative is the short or partial heat shield. These shields cover a portion of the barrel, usually the area closest to the shooter’s support hand. The primary benefit is ease of installation. They often weigh less than full-length shields, which can be an advantage for those prioritizing a lighter feel. However, the reduced coverage means that while protection is still present, it might not be as comprehensive as with a full-length option. The aesthetic is more subdued as well.
Material Considerations
Material plays a significant role in a heat shield’s effectiveness and durability. The most common materials include steel, aluminum, and polymer. Steel heat shields are renowned for their durability and heat resistance. They can withstand extreme temperatures and provide excellent protection. However, steel tends to be heavier than other materials, and can be prone to rust if not properly maintained. Aluminum, on the other hand, offers a good balance of weight, heat resistance, and cost. It’s generally lighter than steel, making it a popular choice for those seeking to minimize the overall weight of their shotgun. Aluminum also doesn’t rust. Polymer heat shields have gained popularity because of their light weight and resistance to corrosion. However, they may not withstand extremely high temperatures as well as steel or aluminum. They often cost less to manufacture as well.
Key Features to Look For
Beyond the basic materials, several other features are worth considering. The mounting method is one. Some heat shields are designed to clamp onto the barrel, making installation relatively straightforward. Others require drilling and tapping, which offers a more secure attachment but necessitates a little more skill and the proper tools. Ventilation design is another key aspect. Heat shields with ventilation slits or holes are better at dissipating heat. These features help to circulate air and draw heat away from the barrel more efficiently. The presence or absence of integrated sight mounts is also a factor. Some heat shields incorporate sights, which can be advantageous for certain shooting styles.
Installation of a Mossberg 590 Heat Shield
Proper installation is crucial for ensuring that your Mossberg 590 heat shield functions correctly and safely. Before you begin, always prioritize safety. Make absolutely certain that the firearm is unloaded. Remove the magazine tube, and visually and physically inspect the chamber to confirm that no ammunition is present. Always follow all firearms safety rules.
Preparation
Gathering the correct tools and materials is the first step. The specific tools you’ll need depend on the type of heat shield you’ve chosen. For clamp-on models, you’ll typically need a screwdriver or Allen wrench to tighten the clamps. Drilled and tapped models will require a drill, drill bits of the appropriate size, a tap, and potentially some thread-locking compound. A cleaning cloth or rag and some degreasing solvent might be helpful for preparing the surface of the barrel. Make sure you have a clear, well-lit workspace. Refer to the manufacturer’s instructions that come with your specific heat shield kit.
Step-by-Step Installation Guide
The installation process varies slightly depending on the mounting method. For clamp-on heat shields, the process generally involves: aligning the shield with the barrel, positioning the clamps around the barrel, and tightening the screws with a screwdriver or Allen wrench. Ensure the shield is centered and sits securely. Avoid over-tightening, which could damage the barrel or the heat shield itself.
Installing a drilled and tapped heat shield is a bit more involved and may require professional assistance if you lack the necessary skills or tools. This process typically includes: carefully aligning the shield on the barrel, marking the locations for the mounting holes, drilling the holes to the correct depth and diameter, using a tap to create threads in the barrel, applying thread-locking compound to the screws, and securing the heat shield to the barrel with the appropriate screws.
Tightening and Adjustment
After installation, it’s essential to check for proper tightening and adjustment. Carefully inspect the heat shield to make sure it is firmly attached and won’t move during firing. If your heat shield is a clamp-on model, make sure the clamps are snug. If you notice any movement or rattling, retighten the screws. If the shield has any adjustable features, such as sights or mounting points, make the necessary adjustments to suit your individual needs.
Maintenance and Care
Like any accessory, a Mossberg 590 heat shield requires regular maintenance to ensure it remains in good working order and provides optimal protection. Routine cleaning helps to prevent the buildup of dirt, debris, and carbon residue, which can potentially impair its functionality or lead to corrosion.
Cleaning the Heat Shield
Cleaning your heat shield is a relatively straightforward process. After each shooting session, or periodically if the shotgun sees less frequent use, simply wipe down the shield with a clean cloth. For tougher grime, you can use a mild cleaning solvent specifically designed for firearms. Avoid harsh chemicals that could damage the finish or the material of the shield. Ensure the shield is completely dry before storing the shotgun.
Inspection
Regular inspection is equally important. Take a close look at the heat shield before and after each shooting session. Check for any signs of damage, such as cracks, dents, or loose screws. Any damage could compromise the shield’s ability to protect you from the heat. If you find any issues, replace the shield immediately.
Storage
When storing your Mossberg 590, ensure that the heat shield is protected from damage. Avoid storing the shotgun in an environment that is prone to extreme temperatures, excessive humidity, or direct sunlight. Properly stored, a Mossberg 590 heat shield should provide years of dependable service.
Benefits and Considerations
The advantages of equipping your Mossberg 590 with a heat shield are considerable. The most obvious benefit is the enhanced safety. A heat shield significantly reduces the risk of burns and discomfort from a hot barrel. It allows you to handle the shotgun more comfortably and confidently, especially during sustained firing. Moreover, a heat shield often improves the overall aesthetics of the shotgun, giving it a more tactical or aggressive appearance. The improved grip it can provide can enhance both comfort and control.
There are a few potential considerations to keep in mind. The most obvious one is the addition of weight to the shotgun. Heat shields typically add a small amount of weight, although the impact is generally minimal. Also, some shooters find that the presence of a heat shield can slightly alter the balance of the firearm. More importantly, some heat shields require that you modify your shotgun by drilling into the barrel. Ensure your are comfortable with doing this. It is advised that you utilize a professional gunsmith for this task.
Where to Buy a Mossberg 590 Heat Shield
Finding a quality Mossberg 590 heat shield is easier than ever, thanks to the wide availability of these accessories online and at local gun stores. Reputable online retailers specializing in firearms accessories, often offer a vast selection of heat shields from various manufacturers. GunBroker and Brownells are excellent sources. Local gun stores often provide expert advice and installation services, which can be a plus.
Before making a purchase, take a few things into account. Compare prices from multiple vendors, but don’t let cost be the only determining factor. Consider customer reviews to gauge the quality and reliability of the heat shield. Also, factor in shipping costs and return policies. Some reputable brands you might look for include GG&G, ATI, and a host of other manufacturers.
A Mossberg 590 heat shield is a worthwhile investment for any 590 owner who prioritizes safety, comfort, and performance. By understanding the different types of heat shields, the installation process, and the required maintenance, you can protect yourself from the hazards of a hot barrel and enhance your shooting experience.
