ISMI Springs

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  • 10658
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    ISMI 1911 Commander Flat Wire Recoil Spring 12 lb

    10657
    $8.99

    This flat wire recoil spring for 1911s fits commander guns with full length, 1/4" diameter guide rods. We also use this spring in our Springfield 4" 9mm kit. The 12lb spring weight is perfect for use in 9mm 1911s. ISMI Springs are typically made from...
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  • 10680
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    Plunger Tube Spring

    10680
    $1.50

    The plunger tube spring regulates the detents. This prevents the slide stop from bouncing up prematurely and gives the thumb safety a secure feel.All ISMI Springs are made from silicone chrome instead of 150 year old music wire. Every ISMI spring is heat...
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  • 10670
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    ISMI 1911 Mag Catch Spring

    10670
    $1.99

    If your pistol is more than 15 years old, 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...
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  • ISMI 1911 3" Flat Wire Recoil Spring 16 lb
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    ISMI 1911 3" Flat Wire Recoil Spring 16 lb

    10664
    $8.99

    This flat wire recoil spring for 1911s fits 3" model guns with full length, 1/4" diameter guide rods. We use this spring in our Colt Defender Guide Rod Kits. The 16lb spring weight is perfect for use in 9mm 1911s. ISMI Springs are typically made from...
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  • 10663
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    ISMI 1911 Government Flat Wire Recoil Spring 20 lb

    10663
    $8.99
    This flat wire recoil spring for 1911s fits full size guns with full length, 1/4" diameter guide rods. The 20lb spring weight is perfect for use in .45ACP 1911s. ISMI Springs are typically made from silicone chrome instead of 150 year old music wire...
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  • 10662
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    ISMI 1911 Commander Round Wire Recoil Spring 20 lb

    10662
    $8.95
    This spring is for a commander gun with a standard diameter guide rod. 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...
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  • 10661
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    ISMI 1911 Officer's Flat Wire Recoil Spring 22 lb

    10661
    $8.99

    This flat wire recoil spring for 1911s fits officer's model guns with full length, 1/4" diameter guide rods. We use this spring in our Officer's Guide Rod Kits. The 22lb spring weight is perfect for use in .45ACP 1911s. ISMI Springs are typically made...
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  • 10660
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    ISMI 1911 Commander Flat Wire Recoil Spring 22 lb

    10660
    $8.99

    This flat wire recoil spring for 1911s fits commander guns with full length, 1/4" diameter guide rods. We also use this spring in our Springfield 4" .45 kit. The 22lb spring weight is perfect for use in .45ACP 1911s. ISMI Springs are typically made from...
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  • 10658
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    ISMI 1911 Commander Flat Wire Recoil Spring 14 lb

    10658
    $8.99

    This flat wire recoil spring for 1911s fits commander guns with full length, 1/4" diameter guide rods. We also use this spring in our Springfield 4" 9mm kit. The 14lb spring weight is perfect for use in 9mm 1911s. ISMI Springs are typically made from...
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    $8.99
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  • 10642
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    ISMI 1911 Mainspring (Hammer) 22 lb

    10642
    $6.49

    Also available in 17lb or 19lb. These ISMI Springs are made from a stainless alloy 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...
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    $6.49
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  • 10641
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    ISMI 1911 Mainspring (Hammer) 19 lb

    10641
    $6.49

    Also available in 17lb or 22lb. These ISMI Springs are made from a stainless alloy 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...
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    $6.49
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  • 10640
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    ISMI 1911 Mainspring (Hammer) 17 lb

    10640
    $8.11

    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...
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    $8.11
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