The Benelli M1 Super 90 (M1S90) is a renowned semi-automatic shotgun cherished for its rugged reliability and sleekdesign. However, enthusiasts and tactical users often seek greater comfort and adaptability, which is where the M1S90 to M4 buffer tube adapter comes into play. This modification allows users to upgrade their M1S90 shotgun with the adjustable, ergonomic M4-style stock, offering enhanced performance for various shooting applications.
In this comprehensive guide, we’ll explore everything you need to know about the M1S90 to M4 buffer tube adapter, including the reasons behind the modification, installation instructions, and maintenance tips. Whether you’re a seasoned firearmsenthusiast or a first-time modifier, this guide is designed to provide clear and actionable information on how to successfully upgrade your M1S90 shotgun.
1. Introduction to the M1S90 Shotgun: Why the M1S90 to M4 Buffer Tube Adapter Matters
The Benelli M1 Super 90 is a semi-automatic shotgun widely respected for its simplicity and high performance. With its inertia-driven action, it offers reduced recoil, fast cycling, and minimal maintenance. Originally designed for military and law enforcement, the M1S90 has gained a devoted following among hunters and home defense enthusiasts as well.
However, as reliable as the M1S90 is, its factory stock may not be the most comfortable or adaptable option for all users. Many shooters desire a stock that provides better ergonomics, greater customization, and accessory compatibility. This is where the M1S90 to M4 buffer tube adapter comes into play.
By attaching an M4-style stock, you can enjoy the benefits of an adjustable length of pull, superior recoil control, and compatibility with accessories such as cheek risers, sling mounts, and more. But how exactly can you make this upgrade?
In the following sections, we’ll discuss the technical aspects of the M1S90 to M4 buffer tube adapter, including compatibility issues and the step-by-step installation process.
2. Understanding the M1S90 Shotgun
Before diving into the M1S90 to M4 buffer tube adapter, it’s essential to understand what makes the M1S90 such a popular and reliable shotgun.
Key Features of the M1S90:
- Inertia-Driven System: Unlike gas-operated shotguns, the M1S90 uses an inertia-driven action, which reduces recoil and enhances reliability by minimizing the number of moving parts.
- Lightweight and Balanced Design: The M1S90 is known for its lightweight construction, making it ideal for prolonged use during tactical operations, hunting, or home defense scenarios.
- Versatile and Durable: Whether used in military operations, competitive shooting, or recreational hunting, the M1S90 is versatile enough to handle a wide range of tasks.
While the M1S90 performs excellently with its factory stock, its fixed design limits customization options. This is one of the main reasons enthusiasts opt for the M1S90 to M4 buffer tube adapter. The M4-style stock brings modern ergonomic benefits, allowing users to tailor their setup for better comfort and performance.
3. Why Modify the M1S90 with an M4 Buffer Tube Adapter?
So, why would someone want to modify their M1S90 with an M4 buffer tube adapter? Here are some key advantages:
Enhanced Ergonomics and Comfort
The M4-style stock is adjustable, allowing users to change the length of pull based on their preference or shooting stance. This provides superior comfort compared to the fixed factory stock, particularly for shooters of varying body sizes.
Customization Options
Unlike the M1S90’s factory stock, which has limited accessory options, the M4-style stock offers a wide range of compatibility with aftermarket accessories. From cheek risers to sling attachments, the M4 stock allows users to personalize their shotgun to fit their needs.
Improved Recoil Management
The M4-style stock offers improved recoil absorption, which can reduce shooter fatigue during extended shooting sessions. This can be particularly beneficial in tactical or competition settings where rapid fire and follow-up shots are required.
Modern Appearance
While function is paramount, many users also appreciate the sleek, modern appearance of the M4 stock. The M1S90 to M4 buffer tube adapter not only upgrades the shotgun’s performance but also its aesthetic appeal.
With all these benefits in mind, the M1S90 to M4 buffer tube adapter becomes an attractive option for those looking to modernize their shotgun without sacrificing the reliability and performance that the M1S90 is known for.
4. The M1S90 to M4 Buffer Tube Adapter: A Technical Overview
Now that we understand the reasoning behind the M1S90 to M4 buffer tube adapter, let’s break down the technical details.
What Is the M1S90 to M4 Buffer Tube Adapter?
The M1S90 to M4 buffer tube adapter is a custom-made piece of hardware designed to bridge the gap between the M1S90 shotgun’s unique stock attachment system and the standard AR-15/M4 buffer tube. This adapter allows the installation of an M4-style stock on the M1S90, providing users with all the ergonomic and functional benefits mentioned earlier.
The adapter typically features a sturdy, metal construction that secures the buffer tube to the receiver of the M1S90. Depending on the manufacturer, the adapter may include additional features like a recoil pad or mounting options for sling attachments.
Compatibility Considerations
While the M1S90 to M4 buffer tube adapter offers great customization potential, users should be aware of a few compatibility concerns:
- M1S90’s Proprietary Attachment System: The M1S90 uses a unique attachment mechanism for its factory stock, which is not directly compatible with M4 buffer tubes. The adapter is essential to make this modification possible.
- Inertia-Driven Action: The M1S90’s operating system relies on specific weight distribution and balance. Adding an M4-style stock may slightly alter the shotgun’s balance, which could affect recoil management and cycling performance.
- Custom Fabrication: While some aftermarket solutions exist, many M1S90 to M4 buffer tube adapters are custom-fabricated, meaning there may be variations in quality and compatibility. It’s important to choose a high-quality, well-reviewed adapter to ensure reliable performance.
5. Can You Adapt an M4 Buffer Tube to the M1S90?
Adapting an M4 buffer tube to the M1S90 is possible, but it’s not as simple as swapping out one stock for another. Several factors must be considered to ensure a safe and effective modification.
Steps Involved:
- Choose a Reliable Adapter: Since the M1S90 doesn’t have a standardized buffer tube attachment system, you’ll need a custom adapter that fits both the M1S90 receiver and the M4 buffer tube. Look for adapters that are specifically designed for the M1S90 and check user reviews for feedback on performance.
- Professional Installation: Depending on your experience level, it’s recommended to have a gunsmith install the M1S90 to M4 buffer tube adapter. While DIY installation is possible, professional guidance ensures safety and proper function.
Potential Challenges:
- Inertia-Driven System Adjustments: Adding a heavier stock or altering the weight distribution can affect the cycling and overall performance of the M1S90. Some users report slight changes in recoil or handling when switching to an M4 stock.
- Legal Restrictions: Always check local laws and regulations before making any modifications. Some areas have restrictions on firearm modifications, particularly regarding stock configurations.
6. Step-by-Step Guide to Installing the M1S90 to M4 Buffer Tube Adapter
Installing the M1S90 to M4 buffer tube adapter requires patience and precision. Follow these detailed steps to ensure a smooth and successful installation.
Tools You Will Need:
- Screwdrivers and wrenches
- M1S90 to M4 buffer tube adapter (specific to your model)
- M4 buffer tube and stock
- Thread-locking compound (e.g., Loctite)
Step 1: Preparation
Before starting the installation, ensure that the M1S90 is unloaded and placed on a stable work surface. Gather all the necessary tools and components to prevent interruptions.
Step 2: Remove the Factory Stock
Use a screwdriver to remove the retaining bolt that holds the factory stock in place. Once the bolt is removed, carefully slide the stock off the receiver. Check for any dirt or debris around the attachment point that could interfere with the new adapter.
Step 3: Install the Buffer Tube Adapter
Secure the M1S90 to M4 buffer tube adapter onto the receiver using the provided screws or bolts. Be sure to apply thread-locking compound to ensure the adapter stays in place.
Step 4: Attach the M4 Buffer Tube
Screw the M4 buffer tube into the adapter, tightening it securely without over-torquing. Then, slide the M4 stock onto the buffer tube and adjust it to your preferred length.
Step 5: Post-Installation Checks
Double-check that all screws and bolts are tightened properly. Test the shotgun to ensure it functions smoothly and that the new stock feels stable and secure.
7. Maintenance and Care After Installation
After modifying your M1S90 with the M1S90 to M4 buffer tube adapter, it’s essential to maintain the firearm properly. Regularly inspect the stock, buffer tube, and adapter for wear or looseness. Clean and lubricate all components to ensure smooth operation.
8. Frequently Asked Questions
- Will modifying my M1S90 void the warranty? Yes, any modification that alters the firearm’s original design can void the warranty. Always check with the manufacturer before making any changes.
- Can I revert to the factory stock? Yes, you can reinstall the factory stock as long as the original parts remain intact.
- Is professional installation necessary? While experienced individuals may be able to install the adapter themselves, professional gunsmithing ensures that the modification is done safely and correctly.
9. Conclusion
The M1S90 to M4 buffer tube adapter is an excellent upgrade for anyone looking to improve the comfort, customization, and performance of their Benelli M1 Super 90 shotgun. By following the installation guide and considering the compatibility challenges, you can easily transform your M1S90 into a modern, ergonomic firearm suited to your needs. Whether you’re using it for tactical operations, hunting, or home defense, this modification offers significant improvements that enhance your shooting experience.
With the right tools, knowledge, and attention to detail, you can enjoy all the benefits of the M4-style stock without compromising the reliability of your M1S90 shotgun.
