SIG Continues Free P320 Voluntary Upgrade Program

SIG P320 Pre Voluntary Upgrade Program
A SIG P320 Pre-Voluntary Upgrade Program. Note the thicker trigger.

U.S.A.-( In response to a previous settlement stemming from a class-action lawsuit filed against SIG, the company continues to offer a VUP (voluntary upgrade program) for all its P320 pistols purchased prior to August 2017. While SIG denies the allegations of wrong-doing, shooters in possession of P320 pistols eligible for this upgrade should really take advantage of it, since SIG is paying for everything including shipping. For the full details, check out the official statement released by SIG below.

Dear Valued Customers,

Below, please find information that is being forwarded again as part of the recent Hartley Agreement regarding Sig Sauer’s P320 upgrade program, which is available to all P320 pistol owners. The below notice has been approved by the court as part of the resolution of a class-action lawsuit.

This upgrade program has been available to all P320 owners since August 2017, and it remains available to all P320 owners who purchased their pistols before that date. The upgrade program is completely free of charge to all customers; SIG SAUER is even covering the cost of shipping and returning your P320 pistol to you!

Based on its own internal testing and input from various law enforcement, government and military customers, SIG SAUER modified the design of its P320 pistol to improve its safety, reliability and overall performance. Specifically, the upgraded P320 has lighter internal components, including a new thinner-profile trigger and a lighter sear and striker. These upgrades will enhance the protection against unintended discharges if the pistol is dropped. Any unintended discharge, including a discharge from a dropped firearm, includes a risk of death or serious bodily injury to all those in the vicinity of the firearm.

Additionally, the upgraded P320 pistol includes a mechanical disconnector which provides an additional layer of protection against cartridge failure events. A cartridge failure event can pose a risk of injury to the shooter or those in the immediate vicinity and can also cause damage to the firearm itself. The addition of a mechanical disconnector also prevents a dead trigger if the trigger is pulled while the slide is retracted.

SIG SAUER is reaching out to remind P320 owners of this free upgrade program and to encourage all P320 owners who have not yet participated to take advantage of this program. Since SIG SAUER started the upgrade program, over a hundred thousand P320s have been upgraded. Customers that have taken advantage of the program have been extremely pleased with the enhanced performance, reliability and safety, and have appreciated the ease and turnaround time of this upgrade process.

SIG SAUER encourages all P320 owners whose pistols do not include the upgraded design to participate in the free upgrade program. For more information on the upgrade or how to participate in the program, please visit SIG SAUER’s website at


SIG SAUER, Inc. is a leading provider and manufacturer of firearms, electro-optics, ammunition, airguns, suppressors, and training. For over 150 years SIG SAUER, Inc. has evolved, and thrived, by blending American ingenuity, German engineering, and Swiss precision. Today, SIG SAUER is synonymous with industry-leading quality and innovation which has made it the brand of choice amongst the U.S. Military, the global defense community, law enforcement, competitive shooters, hunters, and responsible citizens. Additionally, SIG SAUER is the premier provider of elite firearms instruction and tactical training at the SIG SAUER Academy. Headquartered in Newington, New Hampshire, SIG SAUER has almost 2,000 employees across eight locations. For more information about the company and product line visit:

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My understanding from reading the information SIG sent out, and their website, is that this does not apply to the M17 or M18, i.e. the MHD series.