ISMI Sear Spring for Sig Sauer P320 Minus 10 Percent
Designed to fit Sig Sauer Models: P320.
Tune trigger feel with race-grade hardware with the ISMI Minus-10% Sear Spring for Sig Sauer P320 pistols from NDZ Performance. It reduces sear spring force by approximately 10% to deliver a slightly lighter trigger pull along with a faster reset while keeping predictable, repeatable function. A precision replacement sear spring manufactured from aerospace-grade chrome-silicon alloy and produced with ISMI’s motorsport-level processes; heat-treated, shot-peened, and stress-relieved to hold tight tolerances and resist fatigue far better than ordinary music-wire springs. Get yours at NDZ Performance today!
Features:
- Minus 10% force vs factory sear spring (approximate).
- Aerospace chrome-silicon construction; heat-treated, shot-peened, stress-relieved.
- Engineered for Sig P320 fire-control packs, verify model/generation compatibility.
- Manufactured to ISMI tolerances for consistent compression and long life.
See our complete line of Sig Sauer P320 Products here
Note: NDZ always recommends any part be installed by a qualified and trained gunsmith. NDZ promotes the use of safety practices and gear when working on any firearm.
Manufacturer SKU: P320 SEAR, -10%
Brand: ISMI
Type: Sear Spring
Country/Region Of Manufacture: Made in the USA.
NDZ Custom Kit: No
For Gun Make: Sig Sauer
For Gun Model: P320
| Gun Make | Sig Sauer |
|---|---|
| Product Type | Sear Spring |
| Product Model | Minus 10% Power |
| Product Material | Chrome Silicon |
| Gun Model | P320 |
| Gun Model | M17 |
| Gun Model | M18 |
| Gun Model | X-Series |
| Gun Model | P320MAX |
| Gun Model | XFIVE Legion |
5 Reviews Hide Reviews Show Reviews
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Fantastic when paired with +10 ISMI trigger reset
The ISMI -10 sear springs paired with ISMI +10 trigger reset spring truly improves trigger action. Combined with an Apex trigger and trigger bar, creating a near perfect trigger for the P320. Results are splits in the teens, with a smooth lighter break and crisp reset. Highly recommend.
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Pretty Good
NDZ Performance did a great job of shipping these springs quickly. The springs were of top quality. I didn't get the desired results, according to my Wheeler digital trigger gauge, but that wasn't the fault of either the springs or NDZ. I wouldn't buy these again, but NOT because of NDZ nor the quality of the springs.
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Sear spring
Awesome worked great
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Fantastic
Paired with a Greyguns adjustable trigger and you’ve got yourself a winner
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P320 sear spring
Reason for low rating is there are 2 springs in the gun and you only get one in the package. I didn't read anywhere that 2 were needed until I took apart the gun.. The spring i received is to large compared to the original springs. so I have to order from another company the proper spring set, only reason i gave it fair marking is because NDZ got it to me fast like normal, great packaging as well as good price. Unfortunately, the shipping is almost 2 dollars more than the item so just set it in the extra springs box incase i need to modify a spring for something else in the future. Just to be clear and honest. I did NOT contact them about this item and it not looking right. i do not want to pay more to ship it back than what the item cost me. and then have to pay shipping if they send me a different one. A $4.99 item isn't worth the hassle even though I am on a set income.. They sent me this email to comment on it before even asking if all was well so here it is. Loyal Customer Tim
