Common Bolt Carrier Group Concerns
Failure to Lock Back on the Last Round
The bolt carrier group (BCG) is the heart of the AR-15’s operating system. Its smooth and reliable function is paramount for consistent operation. Several problems can plague the BCG in a side-charging upper, potentially leading to frustrating malfunctions.
Short Stroking
Short stroking, or incomplete cycling of the BCG, presents another recurring issue. This condition results in the bolt carrier not traveling far enough to fully extract and eject the spent casing or to reliably chamber a fresh round. It’s often associated with insufficient gas pressure, a faulty gas system, or a BCG that’s not properly lubricated or fitted. Understanding and correcting short stroking often involves adjusting the gas block, ensuring proper gas tube alignment, or evaluating the BCG’s condition.
Extraction Problems
Extraction problems, such as failure to extract the spent casing, also commonly arise. This means the rifle struggles to remove the used brass from the chamber, leading to jams and malfunctions. Extracting issues can stem from a weak extractor, an extractor spring that’s past its prime, a dirty chamber, or even incorrect ammunition selection. In side-charging uppers, the extractor may experience different stress profiles.
Incompatibility Issues
Furthermore, incompatibility issues can sometimes surface when using certain BCG designs in BCA side-charging uppers. While most BCGs should function, variations in design and manufacturing tolerances could potentially lead to problems. Careful selection of a high-quality BCG, and a thorough inspection upon installation, is vital.
Charging Handle Troubles
Charging Handle Breakage or Bending
The charging handle, a critical component in any side-charging system, is responsible for manually cycling the action and chambering the first round. Issues with the charging handle can significantly impact the rifle’s reliability and ease of use.
Charging Handle Disengaging During Firing
Another concern is the charging handle disengaging during firing. In this scenario, the charging handle somehow comes loose and moves while the rifle is being discharged. This can disrupt cycling, cause a malfunction, or even pose a safety risk. Proper engagement and retention mechanisms are crucial.
Charging Handle Binding or Rubbing
Charging handle binding or rubbing represents another common issue. If the charging handle doesn’t move smoothly through its travel, it can create friction and impede cycling. This can be caused by burrs, rough surfaces, or poor alignment between the charging handle and the receiver. Proper fit and finish, as well as lubrication, are critical to a smooth action.
Aftermarket Charging Handles
Moreover, problems related to aftermarket charging handles may arise. Not all aftermarket charging handles are perfectly compatible with BCA side charging uppers. There are varying dimensions, designs, and retention mechanisms. It’s critical to select a charging handle known to be compatible and properly installed to avoid malfunctions.
Issues with Fit and Finish
Loose Tolerances in the Upper Receiver
Fit and finish play a significant role in the functionality of an AR-15. The tighter the tolerances and better the finish, the greater the chance of reliability. Unfortunately, issues with fit and finish can sometimes plague BCA side charging uppers, leading to mechanical difficulties.
Poor Alignment of Components
Poor alignment of components can also introduce issues. Misaligned gas tubes, barrels, or charging handle channels can cause friction, impede operation, and lead to erratic behavior. Proper alignment is essential for optimal function.
Burrs or Sharp Edges
Burrs or sharp edges present a further complication. During the manufacturing process, burrs or sharp edges can be left on the receiver, potentially interfering with the movement of internal parts and causing malfunctions. Careful inspection and deburring are essential.
Surface Imperfections
Surface imperfections can affect functionality. Surface defects on the receiver, such as rough patches, corrosion, or other imperfections, can impede the smooth cycling of the action and potentially contribute to malfunctions.
Reliability Considerations
Higher Frequency of Malfunctions
Ultimately, the reliability of a rifle is paramount. While the AR-15 is known for its reliability, any deviation from standard designs (like the addition of a side-charging mechanism) can potentially impact the system’s consistency.
Sensitivity to Ammunition Type
Sensitivity to ammunition type could also be a factor. Some BCA uppers may be more sensitive to the type of ammunition used. The gas pressure, bullet weight, and overall quality of ammunition can affect the rifle’s cycling and reliability.
Potential Issues with Gas System Setup
Potential issues with gas system setup may also contribute to problems. Proper gas system configuration is crucial for the AR-15’s operation. In side-charging uppers, the gas system may require careful tuning and adjustment. Improper configuration could lead to short stroking, failures to extract, and other malfunctions.
Challenges in Assembly and Installation
Difficulties with Proper Gas Tube Alignment
Proper assembly and installation are absolutely critical for the reliability of any AR-15. However, the complexities of the side-charging design can sometimes add to the challenge.
Potential for Improper Assembly
Potential for improper assembly leading to malfunctions is an ever-present concern. If components are not installed correctly or torqued properly, the rifle may experience failures. It’s essential to follow the manufacturer’s instructions carefully and use the appropriate tools.
Issues with Handguard Compatibility
Issues with handguard compatibility and alignment are also potential problems. The handguard must be properly aligned with the upper receiver to ensure smooth operation and prevent damage to the rifle. Choosing compatible components is vital.
Solutions to Keep Your Rifle Running
BCG-Related Solutions
To address BCG-related problems:
- Lubricate the BCG generously with high-quality gun oil.
- Inspect the extractor, ejector, and other key components for wear and tear, and replace as needed.
- Consider switching to a known-compatible BCG.
- Check for a proper gas key seal to avoid gas leakage and operational issues.
Charging Handle-Related Solutions
To manage charging handle-related issues:
- Inspect the charging handle for damage and replace it if bent or broken.
- Consider a higher-quality charging handle and install it correctly.
- Ensure the charging handle properly engages and retains.
- Lubricate the charging handle and receiver channels to reduce friction.
Fit and Finish-Related Solutions
For fit and finish-related solutions:
- Inspect the upper receiver for burrs and sharp edges, and carefully remove them.
- Ensure all components are properly seated.
- Consider using shims or making adjustments to improve fit.
Reliability-Related Solutions
When it comes to reliability-related problems:
- Ensure the correct gas system length.
- Adjust the gas block (if adjustable) to fine-tune gas flow and optimize cycling.
- Experiment with different ammunition types to determine which works best.
- Perform routine cleaning and maintenance.
Additional Advice
Beyond the solutions outlined above, these general troubleshooting tips are valuable:
- Inspect the gas tube for damage or blockage.
- Verify proper torque for all screws and fasteners using a torque wrench.
- Consult the BCA website or reach out to customer support for specific information about issues.
- Check for signs of excessive wear on the upper receiver or the bolt carrier group.
Comparing to the Competition
While BCA offers a cost-effective entry point into the side-charging world, it’s important to acknowledge competing offerings from other manufacturers. Companies like Gibbz Arms and Wilson Combat provide alternative side-charging upper designs. Generally, you will see that better reliability is often associated with higher price points. Choosing the right upper depends on your budget, your shooting needs, and your tolerance for potential problems.
Conclusion: Making the Best Choice
Bear Creek Arsenal side charging uppers offer the potential of a more intuitive charging experience. However, it’s critical to understand the potential issues. BCG malfunctions, charging handle troubles, fit and finish deficiencies, reliability problems, and assembly challenges can arise. Addressing these problems with careful troubleshooting, parts replacement, and diligent maintenance is paramount. Carefully consider your needs and budget, and research different side-charging upper options.
Before making a purchase, conduct thorough research to see real-world feedback from owners and users. Ensure you’re comfortable with the potential for tweaking or troubleshooting your BCA side charging upper.
Disclaimer
This article is for informational purposes only and does not represent professional gunsmithing advice. The information provided is intended to offer a general overview of potential problems and solutions. Always follow safe gun handling practices. If you encounter any issues you are unsure about, consult with a qualified gunsmith.
Hopefully, this comprehensive guide helps you understand and address any problems you encounter with your Bear Creek Arsenal side charging upper. Safe shooting!
