Understanding the Foundation
Before diving into the problems, it’s helpful to briefly recap what the Kel-Tec SUB-2000 Gen 2 is all about. It’s a semi-automatic carbine chambered primarily in 9mm Luger or .40 Smith & Wesson. Its defining characteristic is its ability to fold in half, significantly reducing its overall length for storage and transport. This folding feature, coupled with its utilization of popular handgun magazines (most notably Glock magazines, though other variants are available), makes it incredibly appealing to those seeking a convenient and versatile firearm. The Gen 2 represents an evolution of the original SUB-2000, incorporating refinements to improve reliability and ergonomics. It’s often praised for its affordability, offering a carbine experience at a price point that’s accessible to many. But, as with any firearm, understanding its potential shortcomings is crucial for any prospective owner.
Troubles with Feeding and Ejection
One of the most frequently cited problems with the Kel-Tec SUB-2000 Gen 2 revolves around feeding and ejection. This encompasses several related issues: failures to feed (FTF), failures to eject (FTE), and instances where the firearm exhibits erratic cycling behavior. These problems can disrupt the shooting experience and, in some cases, raise safety concerns. Identifying the underlying causes is the first step in finding a resolution.
Several factors can contribute to feeding and ejection issues. Magazine problems are often at the top of the list. Incompatible magazines, damaged magazines, or magazines that have been worn out through extensive use can all create disruptions. A magazine that doesn’t seat properly or doesn’t feed cartridges correctly will inevitably cause malfunctions. Experimenting with different magazines, including those from reputable manufacturers, is often a primary step in troubleshooting.
Another key component is the recoil spring. Over time, the recoil spring can weaken, losing its ability to properly cycle the action. A weak recoil spring might not provide sufficient force to fully chamber a new round or extract and eject a spent casing. If the spring appears visually damaged or if the user is experiencing frequent malfunctions, replacing the recoil spring is often a straightforward solution.
The extractor, responsible for gripping the rim of the spent casing, is also a potential culprit. A worn or damaged extractor may fail to grip the casing securely, leading to FTE issues. Similarly, the ejector, which physically kicks the casing out of the firearm, might be malfunctioning. Inspecting both components and replacing them if necessary is essential to restoring reliable function.
The chamber itself also warrants scrutiny. A rough or dirty chamber can hinder the smooth entry of new rounds or the extraction of spent casings. Regular cleaning and inspection of the chamber are paramount. Using a chamber brush and appropriate solvents can often resolve this problem.
Finally, ammunition can play a role. Inconsistent bullet seating, poor quality brass, or ammunition with dimensions that are slightly out of spec can contribute to feeding and ejection problems. Always use high-quality, properly loaded ammunition from a reputable manufacturer to minimize the chances of ammunition-related malfunctions. Careful consideration and attention to detail are vital in addressing feeding and ejection problems to maintain the performance of your Kel Tec Sub 2000.
Troubleshooting Steps
Troubleshooting often starts with the most obvious: the magazine. Try different magazines, including known reliable ones, and see if the issue persists. Inspect the magazines for any damage, wear, or improper seating. Next, inspect the recoil spring and extractor. Replace them if they appear worn or damaged. Clean the chamber thoroughly. Finally, ensure you’re using quality ammunition from a reputable manufacturer.
Addressing Accuracy Concerns
While the Kel-Tec SUB-2000 Gen 2 is not generally considered a precision rifle, accuracy is still a fundamental aspect of any firearm. Some owners have reported accuracy concerns, ranging from groups that are larger than expected to the point of impact varying noticeably from shot to shot. Although the SUB-2000 Gen 2 is designed as a practical carbine for defensive or recreational shooting, these accuracy issues can be frustrating.
Sights, both the front and rear, are critical for consistent and accurate shooting. Misaligned or damaged sights are a common cause of accuracy problems. Ensure the sights are properly aligned and securely fastened. If the sights are adjustable, make the necessary adjustments to compensate for point-of-impact deviations.
The barrel of the Kel-Tec SUB-2000 is another area to consider. While the barrel is generally functional, some owners have found that their accuracy is not quite what they expected. Regular cleaning of the barrel is essential to remove fouling and debris that can affect accuracy.
A significant aspect of improving accuracy comes down to the fundamentals of shooting. Proper grip, stance, sight picture, and trigger control all contribute to consistent shot placement. Practicing with your SUB-2000 and focusing on these fundamentals will likely yield improvements in accuracy.
Improving Shot Placement
Start with the basics: stance, grip, and sight alignment. Practice dry firing to improve trigger control without live ammunition. Consider professional training to enhance your shooting skills. Regular cleaning of the barrel and inspecting the sights are also important.
Investigating Folding Mechanism Issues
The folding mechanism, the SUB-2000’s defining feature, is a source of both admiration and, occasionally, concern. The design allows for compact storage and transport. However, some users have reported issues with the folding mechanism over time.
One common complaint involves looseness or play in the hinge. This can manifest as a slight wobble in the folded or unfolded position. While a small amount of play may not significantly impact functionality, excessive looseness can be disconcerting.
Difficulty folding or unfolding the carbine is another issue. This can be caused by a variety of factors, including a lack of lubrication, debris in the hinge mechanism, or damage to the locking mechanism.
Fortunately, many folding mechanism issues can be addressed through careful maintenance and regular inspections. Lubricating the hinge with a quality gun oil can help ensure smooth operation and reduce friction. Inspect the hinge for any signs of damage or wear. If damage is found, or if the mechanism continues to malfunction, seeking the assistance of a gunsmith may be advisable.
Maintaining the Hinge
Regular lubrication of the hinge is key. Use a quality gun oil and apply it sparingly. Inspect the hinge for any damage or wear. If the hinge is excessively loose, consider contacting Kel-Tec for repair options.
Dealing with Trigger Problems
The trigger is a critical component, as it is the interface between the shooter and the firearm. Some owners have reported trigger-related issues with their SUB-2000 Gen 2s, affecting the overall shooting experience.
A heavy or gritty trigger pull is one common complaint. A heavy trigger pull can make it difficult to maintain a consistent sight picture and can contribute to inaccuracy. A gritty trigger feel can be caused by a lack of lubrication, debris in the trigger mechanism, or the use of low-quality trigger components.
Fortunately, the trigger problems can often be resolved. Disassembling, cleaning, and lubricating the trigger mechanism can often improve the feel and reduce grittiness. Aftermarket trigger upgrades are available that offer improved trigger pulls. However, it’s important to emphasize the importance of safety when working on trigger mechanisms.
Trigger Fixes
Cleaning and lubricating the trigger mechanism may improve its feel. Consider using a high-quality gun oil or a dedicated trigger lubricant. Aftermarket trigger upgrades are available for those seeking a lighter, smoother trigger pull. If you’re not comfortable working on the trigger mechanism, seek the assistance of a qualified gunsmith.
Addressing Magazine Compatibility
The SUB-2000 Gen 2’s magazine compatibility is a significant selling point, but it’s not without its potential pitfalls. While designed to accept popular handgun magazines, ensuring compatibility can occasionally present challenges.
Some owners have reported that certain magazines do not feed reliably in their SUB-2000 Gen 2s. This is particularly true for older or aftermarket magazines. It’s essential to test and confirm compatibility with specific magazine brands and models before relying on them for self-defense or other critical applications.
The magazine well, the space in the lower receiver that accepts the magazine, also plays a role. A magazine well that is slightly out of spec or has burrs can cause feeding problems. Inspecting the magazine well for any irregularities is a good idea.
Taking the time to test multiple magazines with your Kel Tec Sub 2000 will help you ensure proper feeding and maintain performance. This will contribute to a safer and more reliable shooting experience.
Magazine Management
Test and confirm compatibility with different magazines. Inspect magazines for damage and wear. Clean magazines regularly. Ensure magazines are fully seated in the magazine well. If problems persist, consider trying factory magazines.
Maintenance and Cleaning: The Keys to Longevity
Regardless of the problems you may encounter with your Kel-Tec SUB-2000 Gen 2, regular maintenance and cleaning are paramount. Preventative maintenance can greatly reduce the likelihood of encountering these problems in the first place.
Regular cleaning of the barrel is crucial for accuracy. Use a bore brush, cleaning rod, and appropriate solvents to remove fouling and debris that can accumulate inside the barrel. Clean the bolt and action to remove carbon buildup and ensure smooth cycling. Lubricate all moving parts with a quality gun oil to reduce friction and prevent wear.
Cleaning Routines
Follow a regular cleaning schedule. Clean the barrel after each shooting session or more frequently if you’re using corrosive ammunition. Disassemble and clean the bolt and action. Lubricate all moving parts properly. Always use appropriate cleaning solvents and gun oil. Refer to your owner’s manual for specific cleaning instructions.
Exploring Aftermarket Options
The aftermarket offers a range of upgrades and accessories that can address common issues and enhance the SUB-2000 Gen 2’s performance.
Upgraded recoil springs are available and can potentially improve reliability and cycle the action more effectively. Trigger kits can improve the trigger pull, and upgraded sights can enhance accuracy.
Enhancing the SUB-2000
Consider upgraded recoil springs to improve reliability. Evaluate aftermarket trigger kits for a better trigger pull. Consider upgrades for sight alignment.
Understanding User Expectations
The Kel-Tec SUB-2000 Gen 2 is a budget-friendly carbine designed to offer portability and magazine commonality. It’s important to understand that its price point does entail some trade-offs in terms of refinement and build quality. Setting realistic expectations is crucial. It is not, for instance, a match-grade target rifle.
Conclusion
The Kel-Tec SUB-2000 Gen 2, with its folding design and magazine compatibility, presents an attractive option for many firearm owners. However, it’s important to be aware of the potential problems that owners have reported, including feeding and ejection issues, accuracy concerns, and problems with the folding mechanism, trigger, and magazine compatibility. Addressing these problems often involves careful maintenance, cleaning, and, in some cases, the use of aftermarket upgrades. Ultimately, the SUB-2000 offers a practical carbine option, but with a recognition that perfection comes at a price. If persistent problems arise, consult with a qualified gunsmith for assistance.
