Evolution Gun Works Mag Catch ISMI Premium Spring Silicone Chrome

Evolution Gun Works Mag Catch ISMI Premium Spring Silicone Chrome. All ISMI Springs are made from silicone chrome instead of 150 year old music wire. Every ISMI spring is heat treated shot peened & stress relieved to enhance durability consistency and reliability. ISMI is a contractor of the U.S. government and produces springs used in machine guns with incredibly high cycling rates. Also the creator of ISMI springs obtained his knowledge from extensive research in the development of springs used in Indy car racing. Specifications for Evolution Gun Works Mag Catch ISMI Premium Spring: Manufacturer: Evolution Gun Works Color: Chrome Fabric/Material: Silicone Package Contents: Evolution Gun Works Mag Catch ISMI Premium Spring Evolution Gun Works 10670: Mag Catch ISMI Premium Spring Silicone Chrome