The SIG Sauer P320 Compact in .45 ACP offers full-size performance in a compact package.
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SIG Sauer P320 Compact .45 ACP
The SIG Sauer P320 Compact in .45 ACP. Striker-fired .45 pistol with 9+1 capacity. Features caliber-specific FCU, not interchangeable with 9mm/.40 models.
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SIG P320 Compact in .45 ACP: The Most Underrated P320?
The SIG P320 Compact .45 ACP breaks the modularity promise. Unlike the P250, the .45 has a caliber-specific FCU you cannot swap to 9mm. It is a good standalone .45, but here is what you need to know about the limitations before buying.