Sig Sauer P320 .45 for sale
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Sig Sauer P320 Nitron Compact .45 ACP Pistol w/ Night Sights, Black
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
3.9"
Caliber:
.45 ACP
Capacity:
9
Finish Per Color:
Black
(0)
Sig Sauer P320 Compact 9mm Pistol w/Threaded Barrel - 320C-9-BSS-TB
Brand:
Sig Sauer
Barrel Length:
3.9 in
Caliber:
.45 ACP
Capacity:
10
Finish Per Color:
Black
Rounds:
15
(0)
Sig Sauer Pistol P320 Fullsize .45acp Black Contrast Sights 320F-45-B
Brand:
Sig Sauer
Action:
Pistol
Barrel Length:
4.7in
Caliber:
.45 ACP
Capacity:
5+1
(0)
Sig Sauer Pistol P320 Compact .45acp Black Contrast Sights 320C-45-B
Brand:
Sig Sauer
Barrel Length:
3.9"
Caliber:
.45 ACP
Capacity:
9+1
(0)
Sig Sauer P320 .45ACP Full Sized Pistol with Night Sights, Black - 320F45BSS
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
4.7in
Caliber:
.45 ACP
Capacity:
10+1
Finish Per Color:
Black
Marketplace Insights
★ 4.8/5
based on 20 customer reviews across 6 variants from 27 retailers
The Sig P320 Compact is highly praised for exceptional accuracy, comfortable ergonomics, and reliability, though some find it larger than expected for concealed carry.
What customers like
Accurate & Low Recoil45%
Shoots absolutely fantastic, with hardly any recoil.
Comfortable Grip & Ergonomics40%
feels good in your hands, almost like it was custom made
Reliable & Well-Made35%
It's a Sig. I'am a lefty, easy to switch mag. release.
Easy Field Stripping20%
literally takes about 5 seconds. It's a Sig.
Fast Shipping & Service20%
arrived on Thursday 1/20!!! I've never ordered anything online
Common concerns
Not Truly Compact15%
Not really that compact. It has a short barrel
No External Safety5%
It does not have an external safety or a trigger safety
Frequently Asked Questions
Sig Sauer P320 .45 for sale
Is the Sig P320 available in .45 ACP?
Yes, Sig Sauer offers the P320 in .45 ACP in both full-size and compact versions. The full-size has a 4.7-inch barrel and 10-round magazine; the compact has a 3.9-inch barrel and 9-round capacity. Prices typically run around $650.
Is the SIG Sauer P320 Compact a good gun?
The P320 Compact is reliable, accurate, and easy to maintain. Its modular design lets you swap frames and calibers. Law enforcement and military adoption confirm its durability. Striker-fired with a consistent trigger pull, it retails around $650—competitive for its quality. A capable option for carry or range use.
What mags will fit in a SIG P320?
SIG Sauer P320 magazines are caliber and capacity specific. Nine-millimeter versions hold 15 or 21 rounds; .45 ACP mags hold 9 or 10 rounds. Frame size doesn't affect compatibility—full-size and compact P320s accept the same magazines for their caliber. Aftermarket options like Magpul also work reliably.
Did Sig fix the P320 issue?
Sig Sauer offered a voluntary upgrade in 2017 that reduced the trigger weight and added a disconnector safety. However, lawsuits and reports of uncommanded discharges continued after the upgrade, particularly among law enforcement. Sig disputes these claims. Whether the issue is fully resolved remains contested.