ISMI

ISMI premium springs are manufactured exclusively with certified aerospace specification alloys; stainless or chrome silicon. Then the springs are heat treated, shot peened and stress relieved after winding to enhance performance and durability. ISMI springs utilize the same design and manufacturing technology as used in IndyCar and Formula One racing.

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ISMI 8lb Recoil Spring
ISMI premium springs are manufactured exclusively with certified aerospace spec alloys; stainless..
$15.00
In Stock
ISMI Chrome Silicon 1911 Firing Pin Spring
ISMI Chrome Silicon 1911 Firing Pin Spring Upgrade or replace worn-out springs for more depen..
$8.00
In Stock
ISMI Mag Catch Spring
ISMI Stainless Alloy 1911 Magazine Catcgh Spring   ..
$5.00
In Stock
ISMI Main Spring
CAD designed and built to Aerospace specifications from chrome silicon, corrosion resistant, stai..
$8.00
In Stock
ISMI Premium Main Spring 17lb
ISMI premium springs are manufactured exclusively with certified aerospace spec alloys; stainless..
$8.00
In Stock
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