9mm STI Guns Price Graph
Today's 9mm STI Guns average is $566.29, 80% below the 180-day average of $2,830.83. Over the last 180 days, the average peaked at $4,049.99 on July 21, 2026 and bottomed at $566.29 on September 6, 2026.
$1,099.99
Guns.com
$7,149.99
Guns.com
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