Respectfully, please do not spread patently false information. Your tax dollars have tested and proved the uncommanded firing in the P320, whether the manual safety was engaged or not.
The multiple P320s found an replicable uncommanded firing with a rear impact to the slide in the U.S. Army testing. The U.S. Army disclosed they found an unacceptable safety issue with the original test article P320s - repeated firing of the pistol when dropped.
The exact quote -
“During drop testing in which an empty primed cartridge was inserted, the striker struck the primer causing a discharge. SIG SAUER implemented an Engineering Change Proposal (ECP) to correct this deficiency by implementing lightweight components in the trigger group mechanism. ”
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The question is if the P320 uncommanded firing was adequately addressed, either in the DOD-fielded M17/18 system or in commercial specification P320s. Based on 250+ cases known since the period at and following the M17/18 trial testing, there is certainly an argument that SIG’s Engineering Change made after the U.S. Army trials did not fully address the uncommanded discharges.
Separately, it is unknown if the engineering change to mitigate drop testing failures created the holster firing issue or that existed beforehand. There were few cases of holstered weapon issues before the drop firing change, but there were a few cases such as a Houston PD uncommanded discharge at roughly the same time as the drop fix was implemented. The DoD issued M17/18 are absolutely firing when in holsters, including this office pop during lunch at Fort Eustis-
https://npr.brightspotcdn.com/ef/ba/94e6643e458a90109c15c578579d/army-2023-02-08.pdf
Please do not falsely state this is an unreplicable issue - the U.S. Army testing has unequivocally shown there was an uncommanded discharge issue in the P320 design. Perhaps that has been adequately been addressed going forward, but SIG had at least 100,000 guns out the door with the high propensity for dropped firing was documented.