SIG Sauer P320 X5 Legion
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On this page: Verdict · Our Verified Review · The Good · The Not Good · Product Description · What others think · FAQ
The verdict Good: Very accurate, soft-shooting and reliable through thousands and thousands of rounds. The stock trigger is great, but it’s the obvious weakest link.
Our Verified Review
Owned and tested by our reviewer, Will
Will has the SIG Sauer P320 X5 Legion, the non-California model, and runs it all stock with no light. He uses the heavier recoil spring with 115-grain ammo and tops it with a Holosun EPS red dot. He uses it for all of it: matches, range time and at home, across tactical, practical and technical shooting. For accuracy and recoil, he says it’s in a league of its own. He jokes that the recoil is similar to a BB gun. It’s a little more than that, but not much. It’s very accurate and very easy to keep on target.
Reliability has been perfect for him: no issues at all through thousands and thousands of rounds, in tough, dirty, wet and very hot conditions. He did break the optic plate during a competition, but he has never had an issue with the pistol itself. The trigger is great for an out-of-the-box trigger, but Will calls it the obvious weakest link. If you’re particular about triggers or very focused on high-level matches, he says you’ll probably want to think about the trigger. He hasn’t modified his, though he thinks about it sometimes. What bugs him most isn’t the gun at all: he finds the P320’s reputation issues annoying. He has never had a problem with his, and he questions how real those reputation problems are.
The Good ✅
- In a League of Its Own: Will says the accuracy and recoil put it in a league of its own. It’s very accurate and very easy to keep on target.
- Soft Recoil: He jokes that the recoil is similar to a BB gun. It’s a little more, but not much.
- Reliable in Rough Conditions: No issues at all through thousands and thousands of rounds, in tough, dirty, wet and very hot conditions.
- Great Out of the Box: Apart from his red dot, he runs it all stock with no light.
- Does It All: He uses it for matches, range time and at home.
The Not Good ❌
Flaws, but not deal-breakers.
- Trigger Is the Weakest Link: It’s great for a stock trigger, but if you’re particular about triggers or focused on high-level matches, Will says you’ll probably want to think about the trigger.
- Optic Plate Broke: Will broke the optic plate during a competition, though the pistol itself has never had an issue.
- Platform Reputation: The P320 platform has a mixed reputation. Will has never had a problem with his and finds the reputation talk annoying, but it’s worth reading up on it yourself before you buy.
Product Description
Specs and maker’s details
The SIG Sauer P320-XFIVE LEGION is a full-size 9mm pistol that SIG calls the flagship of the P320 platform. SIG increased the weight to 43.5 oz with its TXG tungsten-infused grip module, which it says reduces muzzle flip by up to 50%, and says the skeletonized flat trigger is up to 30% lighter. The recoil system uses a solid steel guide rod and a 14 lb 1911-style spring, with an additional 12 lb spring included.
SIG lists a 5″ bull barrel, an optic-ready slide, Dawson Precision® fiber optic adjustable sights, a removable magwell and grip weight, the LEGION Gray finish and LEGION Henning Group® basepads. The standard model ships with three 17-round steel magazines and has no manual safety. SIG also makes a California-compliant version with a manual safety and 10-round magazines.
What others think
How our verdict compares with other reviews
Overall reception: Very well reviewed. Sportsman’s Warehouse shows 4.7 out of 5 from 293 customer reviews, Gun Tests gave it an A, and Shooting Illustrated called its trigger one of the better striker-fired triggers its reviewer had tried.
Where owners agree: It’s accurate, heavy in a good way and very soft-shooting, with few reliability complaints.
Where owners disagree: The trigger and the platform’s reputation. Professional reviewers praise the stock trigger, but many owners on Reddit call it mushy, with long take-up and reset, and swap in aftermarket kits. Separately, some agencies and ranges have restricted P320-platform pistols after reports of uncommanded discharges (the Connecticut State Police did in 2025), while SIG says a P320 cannot fire unless the trigger is moved to the rear.
Our take: Will’s experience backs up the praise: thousands of rounds in dirty, wet and very hot conditions with no issues from the pistol. On the trigger he sits between the two camps: great for a stock trigger, but the weakest link if you’re particular about triggers or shoot high-level matches.
Sources (checked Oct 18, 2026): Sportsman’s Warehouse ratings · Gun Tests review · Shooting Illustrated review · r/SigSauer trigger thread · r/P320 trigger thread · Connecticut State Police bulletin · SIG P320 safety statement
Frequently Asked Questions
Quick answers to common questions
How does the SIG P320 X5 Legion shoot?
Will says it’s in a league of its own: very accurate and very easy to keep on target. He jokes that the recoil is similar to a BB gun, a little more but not much. SIG says the TXG tungsten-infused grip module reduces muzzle flip by up to 50%.
Is the SIG P320 X5 Legion reliable?
In Will’s experience, yes. He has had no issues at all through thousands and thousands of rounds, in tough, dirty, wet and very hot conditions. He broke the optic plate during a competition, but never had an issue with the pistol itself.
How good is the P320 X5 Legion trigger?
Will says it’s great for an out-of-the-box trigger, but it’s the obvious weakest link. If you’re particular about triggers or very focused on high-level matches, he says you’ll probably want to think about it. He hasn’t modified his.
What recoil spring does Will run in his P320 X5 Legion?
He runs the heavier recoil spring with 115-grain ammo. SIG ships the X5 Legion with a 14 lb 1911-style spring and includes an additional 12 lb spring.
How much does the SIG P320 X5 Legion weigh?
SIG lists 43.5 oz, thanks to its TXG tungsten-infused grip module. It has a 5″ bull barrel and an optic-ready slide.
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