HK MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug

RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug

This is the ultimate US-made barrel for any new or conversion build for the MP5K .40 cal. Crafted from top-grade CHF 41v40 material, it’s machined to impeccable standards. With the correct chamber flutes—something other U.S. barrels often overlook—plus a proper feed ramp and precisely timed extractor cut, this barrel truly stands out. It’s treated with nitride inside and out, ensuring exceptional corrosion and wear resistance. Plus, it comes with a thread protector, making it the perfect choice for your build.

Compatible With:

• HK MP5K .40 S&W

Specifications:

• 3 Lug Threaded 14x.75
• CHF (Cold Hammer Forged)  41v40