First Impressions of EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded
The EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded promises to be a game-changer for USP owners looking to expand their firearm’s versatility. Converting a .40 S&W or .357 SIG USP to 9mm opens up a wider range of ammunition options and potentially reduces recoil, making it an appealing upgrade. EFK Fire Dragon’s reputation for quality barrels piqued my interest, and the threaded design hints at further customization possibilities.
I was looking for a way to reduce the cost of practice ammo for my USP .40, and also to make it more suppressor-friendly. The EFK Fire Dragon conversion barrel seemed like the ideal solution.
Upon receiving the barrel, I was immediately impressed by the clean machining and hefty feel of the stainless steel. The threads were crisp and well-defined, and the included thread protector fit snugly. Compared to other conversion barrels I’ve handled, this one exudes quality, easily surpassing cheaper options in terms of fit and finish. I chose this over a complete 9mm upper because it was more cost-effective and allowed me to maintain the original feel of my USP.
My initial impression was one of excitement. This barrel felt like a substantial upgrade that could significantly enhance the functionality and enjoyment of my HK USP.
Real-World Testing: Putting EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded to the Test
First Use Experience
My first test took place at an outdoor shooting range, primarily focusing on accuracy and reliability with the EFK Fire Dragon conversion barrel. I ran several hundred rounds of various 9mm ammunition types through my USP, including standard 115-grain FMJ, 124-grain NATO rounds, and some 147-grain subsonic ammunition. The weather was mild and dry, providing ideal shooting conditions.
The barrel performed flawlessly with all ammunition types. Accuracy was noticeably improved compared to the original .40 S&W barrel, with tighter groupings at 15 yards. I experienced no malfunctions or feeding issues, even with the subsonic rounds.
The only issue I encountered was the need to use 9mm magazines. My existing .40 S&W mags would not reliably feed the 9mm rounds, as expected.
Extended Use & Reliability
After several months of consistent use, the EFK Fire Dragon barrel has proven to be exceptionally reliable and durable. I’ve put well over 1000 rounds through it without a single malfunction attributable to the barrel itself. Cleaning is straightforward.
A quick wipe-down after each range session keeps it in optimal condition. There are no signs of unusual wear or tear. Compared to my previous experiences with aftermarket barrels, the EFK Fire Dragon stands out for its consistent performance and apparent longevity.
It has exceeded my expectations, transforming my .40 S&W USP into a versatile and enjoyable 9mm platform.
Breaking Down the Features of EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded
Specifications
The EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded boasts the following specifications:
- Caliber: 9mm Luger. This allows for cheaper practice ammo and potentially reduced recoil.
- Material: Type 416 Stainless Steel. This ensures long life and high durability.
- Threads: 1/2×28. This is an industry-standard thread pitch for 9mm suppressors and muzzle devices.
- Compatibility: Heckler & Koch USP Full Size (converts .40 S&W or .357 SIG). This allows USP .40 or .357 owners to shoot 9mm with just a barrel swap and 9mm magazines.
- Heat Treatment: Vacuum furnace heat treated to 40-42Rc. This provides clean, consistent hardness for long-lasting performance.
These specifications are important because they contribute to the barrel’s accuracy, durability, and compatibility with aftermarket accessories. The stainless steel construction ensures resistance to corrosion and wear, while the precise threading allows for secure attachment of suppressors and other muzzle devices. The heat treatment optimizes the steel’s hardness for longevity and consistent performance.
Performance & Functionality
The EFK Fire Dragon conversion barrel performs exceptionally well, delivering improved accuracy and reliable function. The barrel consistently produces tighter groupings than the factory .40 S&W barrel at various distances. It functions flawlessly with a wide range of 9mm ammunition, provided 9mm magazines are used.
The primary strength of this barrel is its ability to transform a .40 S&W or .357 SIG USP into a more versatile and cost-effective 9mm platform. The only minor weakness is that it requires dedicated 9mm magazines.
The barrel meets and exceeds expectations. I was seeking a reliable and accurate conversion barrel, and the EFK Fire Dragon delivers on both fronts.
Design & Ergonomics
The EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded exhibits excellent build quality and a well-thought-out design. The stainless steel construction feels robust and durable. The barrel is heavier than the factory barrel, adding a slight amount of weight to the front of the pistol, which can help reduce muzzle flip.
Installation is relatively straightforward, requiring no specialized tools. However, basic firearm disassembly knowledge is recommended.
Durability & Maintenance
The EFK Fire Dragon barrel is built to last. The stainless steel construction and proper heat treatment ensure resistance to wear and corrosion. Regular cleaning and lubrication are recommended to maintain optimal performance, but the barrel requires no specialized maintenance.
With proper care, this barrel should provide years of reliable service.
Accessories and Customization Options
The EFK Fire Dragon barrel comes with a thread protector to protect the threads when a muzzle device is not attached. The 1/2×28 threading allows for compatibility with a wide range of 9mm suppressors, compensators, and muzzle brakes. The barrel is a drop-in replacement for the factory barrel.
No other modifications are required, other than using 9mm magazines. The EFK Fire Dragon barrel is compatible with most standard USP parts and accessories.
Pros and Cons of EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded
Pros
- Improved Accuracy: The EFK Fire Dragon barrel consistently delivers tighter groupings than the factory barrel.
- Cost-Effective 9mm Conversion: Allows USP .40 S&W or .357 SIG owners to shoot cheaper 9mm ammunition.
- High-Quality Construction: Made from durable 416 Stainless Steel with precise machining.
- Threaded Barrel: Enables the use of suppressors and other muzzle devices.
- Easy Installation: A drop-in replacement for the factory barrel.
Cons
- Requires 9mm Magazines: Existing .40 S&W or .357 SIG magazines will not function reliably.
- Price: The initial cost of the barrel may be a barrier for some.
Who Should Buy EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded?
The EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded is perfect for Heckler & Koch USP Full Size owners who:
- Want to shoot 9mm ammunition in their .40 S&W or .357 SIG USP.
- Are looking for improved accuracy and reliability.
- Want to use a suppressor or other muzzle device.
- Want a high-quality, durable barrel upgrade.
Those who should skip this product:
- Owners of 9mm USPs, as this barrel is only for converting .40 S&W and .357 SIG models.
- Those unwilling to purchase dedicated 9mm magazines.
Must-have accessories or modifications:
- 9mm magazines are essential for reliable function.
- A quality 9mm suppressor to take full advantage of the threaded barrel.
Conclusion on EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded
The EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded is an excellent upgrade for USP .40 S&W and .357 SIG owners seeking to expand their firearm’s capabilities. The improved accuracy, reliable function, and threaded design make it a worthwhile investment. While the initial cost may seem high, the long-term benefits of shooting cheaper 9mm ammunition and the increased versatility of the platform justify the price.
I would highly recommend the EFK Fire Dragon conversion barrel to any USP owner looking to enhance their shooting experience. It is a well-made, reliable, and accurate barrel that transforms the USP into a more versatile and enjoyable firearm. Invest in the EFK Fire Dragon HK USP Full Size 9mm Conversion Pistol – Barrel – Threaded today and unlock the full potential of your Heckler & Koch USP!