Glock 27 pistols, known for their compact size and reliability, are popular choices for concealed carry. However, converting a Glock 27 to a different caliber using a conversion barrel can sometimes lead to problems. This article delves into the common issues associated with Glock 27 conversion barrels, offering insights and solutions for responsible gun owners.
Understanding Glock 27 Conversion Barrels
A Glock 27 conversion barrel allows you to shoot a different caliber of ammunition than the pistol's original design. For example, a common conversion is changing from the standard .40 S&W to 9mm. This modification is often appealing to shooters seeking to reduce recoil or utilize more readily available ammunition. However, using a conversion barrel introduces several potential points of failure that need careful consideration.
Potential Caliber Conversions
The Glock 27's .40 S&W chamber can be converted to fire other calibers, including 9mm, and less commonly, .357 SIG. Each conversion presents a unique set of potential challenges, largely concerning the fit and function within the existing slide and frame.
Common Problems with Glock 27 Conversion Barrels
Several issues can arise from using a Glock 27 conversion barrel, impacting safety, accuracy, and reliability. These problems stem from a mismatch between the barrel's dimensions, the ammunition used, and the gun's original design.
1. Feed Ramp Issues
The feed ramp, the angled surface guiding cartridges into the chamber, is often a source of problems with conversion barrels. A poorly fitted conversion barrel might cause feeding issues, such as:
- Failure to Feed (FTF): The cartridge fails to properly align with the chamber.
- Failure to Eject (FTE): The spent casing gets stuck in the chamber.
- Double Feeds: Two cartridges simultaneously try to enter the chamber.
These issues are often exacerbated by using ammunition with variations in case dimensions or bullet profiles. This is particularly true for the 9mm conversion in a Glock 27 designed for .40 S&W, as the case dimensions differ.
2. Headspace Problems
Headspace, the distance between the rear of the cartridge case and the breech face, is crucial for safe firearm operation. Improper headspace can lead to catastrophic failures, including:
- Squib Loads: A partially burned powder charge leaves a bullet lodged in the barrel.
- Case Head Separation: The cartridge case ruptures at the base.
- Bullet Setback: The bullet is pushed deeper into the case, potentially causing an obstructed barrel.
Using a poorly manufactured or improperly fitted conversion barrel significantly increases the risk of headspace issues. Regular inspection and maintenance are critical to mitigating this risk.
3. Accuracy Issues
Conversion barrels, particularly those made by less reputable manufacturers, can impact accuracy. A barrel with imperfections or insufficient tolerances can lead to inconsistent shot placement and reduced accuracy overall. Choosing a high-quality conversion barrel from a reputable manufacturer significantly mitigates this concern.
4. Reliability Issues
Beyond feeding and headspace problems, conversion barrels can sometimes cause malfunctions related to the overall function of the firearm. This can manifest as:
- Extractor Failures: Improper alignment between the conversion barrel and the extractor can cause failures to extract spent cases.
- Ejection Problems: Difficulty ejecting spent casings.
- Chambering Problems: Difficulty getting cartridges to fully chamber.
These problems often arise from a lack of precise machining and fitting within the Glock 27's existing mechanism.
Choosing and Using a Conversion Barrel Safely
To minimize problems, you must make informed choices:
- Reputable Manufacturer: Select conversion barrels from well-known and trusted manufacturers with a history of producing high-quality products.
- Thorough Inspection: Inspect the barrel carefully for any imperfections or damage before installation.
- Test Firing: Perform thorough test firing with various ammunition types, closely monitoring for any signs of malfunction.
- Regular Cleaning and Maintenance: Regularly clean and maintain the firearm, paying close attention to the conversion barrel.
- Professional Installation: Consider having a qualified gunsmith install the conversion barrel to ensure proper fit and function.
Case Study: A 9mm Conversion in a Glock 27
One user reported consistent FTEs using a budget 9mm conversion barrel in their Glock 27. After replacing the barrel with one from a reputable manufacturer, the feeding problems were resolved. This highlights the importance of selecting high-quality parts for a conversion.
Conclusion
Glock 27 conversion barrels can be a viable option for shooters wanting to modify their firearm, but they necessitate a cautious approach. By prioritizing quality components, careful inspection, thorough testing, and regular maintenance, responsible gun owners can mitigate risks and safely enjoy the benefits of a conversion barrel. However, neglecting these precautions significantly increases the risk of malfunctions and potential hazards. Always prioritize safety when modifying firearms.