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Rat Worx (Research And Testing Worx, Inc.) is known in the industry as a class II firearms manufacturer. Our focus is primarily gun and suppressor sales, along with manufacturing of gun parts, and suppressors. Rat Worx is home of the only Rat Worx MRX automatic chain drive knife. Rat Worx, Inc. was founded in 2002 and is headquartered in Mt. Morris, IL. DISCLAIMER: “STEYR” is a trademark of STEYR ARMS GmbH and is one of many trademarks owned and/or registered by STEYR ARMS, Inc. or STEYR ARMS GmbH. Neither Research And Testing Worx, Inc., nor this site are affiliated in any manner with, or otherwise endorsed by, STEYR ARMS, Inc. or STEYR ARMS GmbH. The use of “STEYR” on this page is merely to advertise the sale of STEYR firearms, parts, or components. For additional genuine STEYR ARMS, Inc. and STEYR ARMS GmbH products and parts visit https://www.steyr-arms.com/us/.
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