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Product Info for Evolution Gun Works Main Hammer Spring ISMI

Available in 17lb or 19lb. 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.image

Specifications for Evolution Gun Works Main Hammer Spring ISMI:

Manufacturer: Evolution Gun Works
Color: Black

Package Contents:

  • Evolution Gun Works Main Hammer Spring ISMI

Evolution Gun Works Main Hammer Spring ISMI Orderable Models

List of Orderable Models

  • Evolution Gun Works Main Hammer Spring ISMI, 17 lb, 10640 , MPN: 10640 , UPC: 841370101245 , Code: KK-PDC-MHMSP-10640
  • Evolution Gun Works Main Hammer Spring ISMI, 19 lb, 10641 , MPN: 10641 , UPC: 841370101252 , Code: KK-PDC-MHMSP-10641
  • Evolution Gun Works Main Hammer Spring ISMI, 22 lb, 10642 , MPN: 10642 , UPC: 841370114665 , Code: KK-PDC-MHMSP-10642
  • Evolution Gun Works Main Hammer Spring ISMI, Officers Model, 23 lb, 10643 , MPN: 10643 , UPC: 841370114672 , Code: KK-PDC-MHMSP-10643
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