Bahnhof Machine

Your HK Conversion Specialists

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HK Conversions

Bahnhof Machine specializes in Heckler & Koch conversions for all HK civilian and military-style weapons.

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Custom Builds

If you want something a little more unique, be sure to check out some of our custom build projects.

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We also offer a wide range of other services, including repairs, maintenance, engraving, refinishing, and more.

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We’re HK Experts!

When it comes to HK conversions, service, and repairs, you’ve come to the right place. Our staff is fully trained on all HK semi-automatic and fully automatic weapons, including the SP89, HK91, HK93, HK94, MP5K, MP5, HK21, HK33, HK53, G3, G3K-B, SG1, MSG90, PSG1, PSG2, and many others.

If your gun doesn't work the way it should, or you're interested in a conversion, upgrade, or custom build, contact us today.

Why Own a Firearm

Recent events have shown that our world is becoming increasingly dangerous. As a result, more law-abiding citizens are becoming responsible gun owners. Here are some of the reasons why.

Personal Safety

It’s hard to be a victim when you’re armed. Studies have shown that a firearm is the best way to protect your family and friends from the bad guys.

Home Protection

Home security systems are great, but what happens when they fail? Will your fancy alarm save your life? Will the police arrive in time?

Sport Shooting

Sport shooting is not only fun, it teaches patience, control, and discipline. Plus, it’s a great way to meet other gun enthusiasts.


The war on terror will likely be a long one. Responsible gun owners are our best defense against people who want to do us harm.

No Compromise

For over half a century, Heckler & Koch has been a leading designer and manufacturer of small arms and light weapons for law enforcement and military forces worldwide. Bahnhof Machine is proud to service the entire line of Heckler & Koch firearms. For more information, please call or email us today.

Brad is very knowledgeable and professional. Plus, he's a competitive shooter, which adds to the assistance he can provide his customers.—Ben Priester, Explosives Safety Specialist