Beretta 92/M9 Hammer Springs by ISMI
Manufactured of Chrome Silicon alloy and designed for competition use, these mainsprings allow for tuning of the Beretta 92 and PX4 full size trigger pulls.
Available in: 12, 13, 14, and 16lb variants.
1 Review
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Doesn't fit 92 GTS
ISMI springs are great, but this one didn't fit my 92 GTS. It would install, but it's significantly longer and made for a far heavier trigger than what came in it. I'm guessing the twin sear design had an effect on the spring specs. I'm going to keep it around in case I get a more conventional Beretta 92 someday. 4 stars because the Pro Shop had speedy delivery and the part is as described.