Welcome to the official Common Sense Self-Defense / Street Combat site. Founded by Grandmaster Bram Frank, CSSD-SC has been the hub from which he has promoted his Combat Arnis and Modular systems, along with his knife designs.

What are your CSSD goals today?

DEAL of the MONTH!

The month of September is Bowie month. In memory of Rezin Bowie born September 8, 1793, brother to James Bowie and maker of the first Bowie knife.

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Limited Knives and Tools Now Available

Bram Frank is clearing out his knife collection. He has prototypes, custom one-offs, limited run knives, etc. All that are taking up space. He wants them to go to a good home, to someone who will enjoy owning them or even using them.

This is your chance to get something that no one else has. Go look at what is available, but remember, once a tool is gone, it’s gone. They are all single item purchases.


The New Knives Are HERE!

After months of chaos, which includes, but is not limited to… production delays, shipping delays, government interference, and we can’t forget to mention the instigator in most of that… COVID, we happily introduce to you… the Sister Christian, the Kopesh, and the Desangut which comes in 3 different blade styles and a Trainer Drone.

These knives are now In Stock and ready to ship. Order yours today!

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Meet the Pressers

We are proud sponsors of Meet the Pressers podcast with Matt Mallory and Klint Macro.

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Update your Information

Are you or have you been a CSSD instructor? Have you, at any time taken our courses in Combat Arnis, Modular Knife or CRMIPT?  If this is you, please take a moment and fill out the form via the following link.  We are in the process of updating our database.

CLICK HERE to fill out the form


Miss the last podcast GM Bram Frank was on? Watch/Listen to it here…