ISMI 1911 Mag Catch Spring

ISMI 1911 Mag Catch Spring

Keep you pistol operating in top operating condition.  If you haven’t replaced your magazine Chatch spring, you might want to consider replacing this often forgotten spring to ensure your magazine remains in your gun while firing.

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.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.

In independent testing, ISMI spring have endured in excess of 100,000 compression cycles. We don’t recommend going that long between changes however. With an ISMI spring, practice routine maintenance and change it once a year.

12 Month Replacement Warranty

All ISMI springs are covered by a 12 month replacement warranty. Even for failure due to wear.