The following is a legal Opinion letter issued to Gripknife from one of the foremost experts on Knife Laws in the U.S.  We've never considered Gripknife a switchblade, as defined under the Federal statute, and we feel this letter confirms this.  That said, you should know and understand your local, state, and federal laws regarding knives, foregrips, and concealed weapons.  Gripknife is not responsible for any legal issues that arise when those laws are not adhered to.  

Evan F. Nappen is one of the most respected legal authorities in the nation on the topic of Knife law. As an attorney, Nappen has fought nationally for knife rights and has successfully defended honest citizens charged with knife crimes. He has authored an extensive list of books, magazine articles, and has appeared on CNN, Fox News, NPR, and many other news outlets. He is also the author of “Knife Laws in the U.S.”.