The AR-15 platform's versatility is legendary, and a testament to that is the availability of numerous conversion kits. Among the most popular are 9mm conversion kits, allowing shooters to easily switch their AR-15 from its standard caliber to the widely used and cost-effective 9x19mm Parabellum. But choosing the right kit can be daunting, given the variety of options available. This guide will help you navigate the world of AR-15 9mm conversion kits, clarifying key features, differences, and factors to consider before making a purchase.
Understanding AR-15 9mm Conversion Kits
An AR-15 9mm conversion kit essentially transforms your .223/5.56 AR-15 into a 9mm firearm. This isn't a simple bolt-on; it usually involves replacing several key components. These kits typically include:
- Bolt: A redesigned bolt, often incorporating a different locking mechanism due to the differing cartridge dimensions.
- Magazine: 9mm magazines specifically designed for the conversion kit, often utilizing a different feeding system than standard AR-15 magazines.
- Bcg (Bolt Carrier Group): This is a crucial component, designed to handle the recoil impulse and cycle of the 9mm cartridge.
- Barrel: In some cases, a complete 9mm barrel is needed, although some kits utilize a bolt-on system that works with your existing upper receiver.
Types of AR-15 9mm Conversion Kits
There are several types of conversion kits, each with its pros and cons:
Complete Upper Receiver Kits: These are the most common type, replacing your entire upper receiver assembly with a dedicated 9mm unit. This often provides a seamless integration and superior reliability.
Bolt-on Systems: These kits generally involve replacing only the bolt and magazine well, leaving the upper receiver intact. While potentially less expensive, they might compromise reliability or require adjustments.
Blowback vs. Delayed Blowback: The operating system of the conversion kit also varies. Blowback systems are simpler, while delayed blowback systems offer better reliability and potentially smoother operation.
Factors to Consider When Choosing a Kit
Several factors should guide your decision:
- Reliability: Choose a reputable manufacturer with a proven track record of producing reliable kits. Read reviews and check user forums for feedback.
- Cost: Prices vary significantly. Factor in the cost of magazines and any necessary accessories.
- Ease of Installation: Some kits are easier to install than others. Consider your mechanical aptitude before making a purchase.
- Compatibility: Ensure the kit is compatible with your specific AR-15 lower receiver and upper receiver (if not a complete upper kit).
- Accuracy: While accuracy can vary, reputable brands generally produce kits that deliver acceptable accuracy for their intended purpose.
Popular AR-15 9mm Conversion Kit Brands
While recommending specific brands is beyond the scope of this guide (due to the constantly evolving market and potential for bias), research into reputable firearms manufacturers known for their quality AR-15 components will yield many reliable options. Thorough research of user reviews and independent testing is crucial before making a purchase decision.
Maintaining Your AR-15 9mm Conversion Kit
Regular cleaning and lubrication are essential for maintaining the reliability and accuracy of your conversion kit. Follow the manufacturer's instructions carefully and use appropriate cleaning and lubricating products.
Conclusion
The AR-15 9mm conversion kit opens up a world of versatility for AR-15 owners. By carefully considering the factors outlined in this guide and performing thorough research, you can find the right kit to meet your needs and enjoy the benefits of shooting 9mm in your favorite platform. Remember always to prioritize safety and follow all relevant firearm safety regulations and laws in your area.
