Speed Shooters International SSI
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ISM Hammer Mainsprings

ISM Chrome Silicon Stainless Alloy Hammer Mainsprings


15 lb - Pro-winded for competition use only. Designed to provide reliable ignition while minimizing overcock hammer pressure.

17 lbs - Excellent for competitive shooters seeking a light, consistent trigger pull.

19 lbs - Ideal for use in carry pistols due to its enhanced corrosion resistance.


ISM Hammer Mainspring - 15 lb
Product ID: ISM-MS15
$6.49
ISM Hammer Mainspring - 17 lb
Product ID: ISM-MS17

Out of Stock

ISM Hammer Mainspring - 19 lb
Product ID: ISM-MS19
$6.49