A bombshell report from the Federal Bureau of Investigation’s Ballistic Research Facility (BRF) has raised serious concerns about the safety of the SIG Sauer P320 pistol. The 32-page technical evaluation, dated August 30, 2024, analyzed a specific incident involving the Michigan State Police (MSP) and concluded that it is plausible for the P320 to fire without a trigger pull under certain conditions. According to the FBI, repeated manipulation of the firearm while holstered could disable critical safety features and result in an unintended discharge.
The Incident That Sparked the Probe
This investigation began after a July 31, 2024 incident in which a Michigan State Police motor officer’s issued M18 pistol, a military version of the P320, allegedly discharged while secured in its holster. The officer was standing with others, holding keys in one hand, when the round fired. No one pulled the trigger, according to multiple witness statements and the officer himself. The firearm was stored in a department-issued Alien Gear Rapid Force Level 3 holster at the time. The BRF was called in to evaluate the gun, holster, and surrounding circumstances.
FBI Evaluation Finds Design Weaknesses
The FBI’s BRF discovered multiple issues within the gun’s internal components, including excessive wear on the sear notches and abnormalities in the striker pin hook. Most notably, they found the striker safety lock spring, a critical fail-safe, was not properly seated and could come loose during firing. This condition would effectively render the striker safety lock inoperable. The FBI also noted that the striker could impact the primer if the sear disengaged and the safety lock failed.
Live-Fire Testing Raises Eyebrows
Perhaps the most alarming part of the FBI report was its real-world testing. In several trials mimicking movements similar to those made by officers in the field,like pressing the gun into a wall, jumping, or running, researchers were able to make the P320 fire without the trigger being pulled. In nine out of 50 attempts using a primed case, the pistol fired after only holster manipulation and sear release, indicating failure of the striker safety lock.
A Second Gun Also Fired Without Trigger Input
To confirm the issue wasn’t isolated to one firearm, the FBI tested a second brand-new, unfired M18. On the second attempt, that weapon also discharged during a striker safety lock test, despite no trigger pull. The primer indentation on the fired case matched the threshold required to ignite a round, strongly suggesting the safety mechanism can be defeated by movement alone.
SIG Sauer Declined to Participate
One of the most troubling revelations in the FBI’s report, and emphasized heavily by Jared Yanis of the YouTube channel Guns & Gadgets, was that SIG Sauer declined to participate in the investigation. Despite being invited by MSP to assist, SIG did not engage with the federal agency’s examination. “If my product was being tested by the FBI for going off uncommanded, you better believe I’d want to be part of that investigation,” Yanis said in his analysis.
Jared Yanis Responds: ‘It Ends Today’
In a detailed video titled “IT ENDS TODAY! FBI Report Shows SIG P320 CAN Go Off Uncommanded,” Jared Yanis expressed deep frustration over SIG’s refusal to cooperate and the ongoing public denial by many gun owners who insist the P320 is safe. “Nobody has a problem… until they do,” he said. Yanis, who owns five P320s himself, demonstrated on-camera how even his personal models show up-and-down slide play, one of the conditions that may contribute to uncommanded firing.
ICE Drops the SIG P320 Immediately
The fallout began fast. U.S. Immigration and Customs Enforcement (ICE) issued a directive just days after the FBI report surfaced, ordering all agents to stop carrying any model of the P320. ICE plans to replace the pistols with Glock 19 MOS handguns, citing safety concerns. The memo requires the agency to create a transition plan within 10 days. This rapid reaction by a major federal law enforcement agency could spell more trouble for SIG moving forward.
How the Safety Features Failed
The FBI report breaks down five mechanical steps required for the P320 to fire, with two final safety features, the secondary sear notch and the striker safety lock, meant to prevent accidental discharge. However, the investigation showed that if the striker safety lock becomes disabled by movement or wear, and sear engagement is lost, nothing stops the striker from hitting the primer. This is especially concerning because the striker is held under spring tension even when the trigger isn’t touched.
Trigger Modifications and Manufacturing Defects
According to the FBI, the M18 in question had a modified trigger due to prior “dead trigger” issues experienced by MSP officers. Some triggers were reportedly ground down by 0.020 inches. This fix, largely completed by SIG Sauer technicians, was also performed on the officer’s weapon by an MSP armorer. The report further found uneven wear and “chipped” surfaces on the sear components, suggesting accelerated deterioration or manufacturing defects.
Testing Shows Multiple Failure Points
In addition to the striker safety lock, the FBI found other concerning behavior: the slide catch lever and sear bounced during recoil; the striker pin showed deformities; and the striker pin hook had an irregular “ledge” that may reduce contact with the sear. Combined, these conditions increase the likelihood of uncommanded discharges. The BRF also found that holster design did not contribute to the firing event. It was confirmed that no foreign objects like debris or fingers accessed the trigger.
Why This Matters
This report is a turning point. The FBI’s testing showed that in very specific but realistic scenarios, the SIG P320 can fire without a trigger pull. When you’re a cop running toward danger, the last thing you need is your gun going off while it’s still in the holster. SIG’s refusal to participate in the investigation doesn’t inspire confidence. For those who carry this weapon for duty or defense, this raises a serious question: is the convenience of modularity worth the risk of unpredictability?
Is This the Beginning of the End?
What happens next could reshape the pistol market. With ICE already abandoning the platform, other agencies may follow. If more uncommanded discharges occur, or if lawsuits pile up, SIG may be forced into a full recall or further redesign. Gun owners deserve transparency and accountability. And while most P320s will never malfunction, the 15% failure rate in the FBI’s test should be enough to raise every eyebrow in the firearms community. Because when it comes to life and death, maybe is never good enough.
Ed spent his childhood in the backwoods of Maine, where harsh winters taught him the value of survival skills. With a background in bushcraft and off-grid living, Ed has honed his expertise in fire-making, hunting, and wild foraging. He writes from personal experience, sharing practical tips and hands-on techniques to thrive in any outdoor environment. Whether it’s primitive camping or full-scale survival, Ed’s advice is grounded in real-life challenges.
