The Sig P320 is surely one of the most popular handguns on the market out there.
And if you’re the owner of one, you probably thought about upgrading your pistol or you used it so many times that you need to change the barrel for example.
However, depending on your budget, you may find these barrels a little bit costly but as you know, Sig Sauer is already a well-established brand on the market known for the quality and reliability of their firearms.
Through this guide, we will list a few best barrels you can buy to upgrade your P320 pistol and pass through some of the basics to make it easier for you in the future when you decide to buy a new P320 barrel.
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Factors to Consider When Choosing P320 Barrel
Compared to AR15, choosing a barrel for your P320 pistol may be easier. However, not everything is how it appears to be.
There are still some factors to consider when choosing a barrel for your Sig P320.
Compatibility
Sig P320 is a handgun platform, just like AR15. When it comes to the customization of the P320 you have to consider the compatibility of those parts.
P320 can come in different calibers including 9mm, .40 S&W, .357 SIG, and .45 ACP.
Also, check the size of the barrel and your overall configuration to make sure the barrel you’re going to buy will fit your pistol.
Durability
If you use a pistol often, you’ll need to pick barrels made of quality materials.
For example, look for barrels made of stainless steel that also have a coating that will keep the handgun safe from rust and corrosion.
Threaded vs Non-threaded Barrels
There are two types of barrels you can use on your Sig P320 pistol: threaded and non-threaded barrels.
Depending on your preferences, the main benefit of threaded barrels is the support for muzzle devices. In the case of handguns, the probability is high that you’ll want to add a silencer to make your shooting more pleasurable.
On the other hand, a threaded barrel may increase the length of a handgun, so pay attention to this if you’re thinking about carrying this weapon.
Now, after we covered some basics regarding factors to consider when buying a barrel, let’s take a look at the list of 5 best P320 barrels we picked up for you.
Best P320 Barrels
- Faxon Firearms Sig Sauer P320 Full Size Flamed Barrel
- Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel
- Agency Arms Sig P320 Compact Mid-Line Threaded Barrel
- Killer Innovations Sig P320C Velocity Non-Threaded Barrel
- True Precision Sig P320 Compact 3.9" Threaded Barrel
1. Faxon Firearms Sig Sauer P320 Full Size Flamed Barrel
Let’s start with Faxon Firearms. First off, the barrel is made from 416-R Stainless Steel, it’s built to last. It's durable and will serve you for a long time.
The barrel is chambered in 9mm SAAMI. They provide great precision while maintaining complete SAAMI compatibility and reliable performance.
The tighter tolerances of the Sig Sauer P320 FULL Size Barrel Upgrade are impressive.
Despite being a drop-in replacement, it offers better fitment and lock-up compared to the stock barrel. This means you can expect a secure and snug fit between the barrel and slide, resulting in a better shooting experience and trust in your firearm.
The conventional rifling makes this barrel compatible with cast bullets without affecting the accuracy.
Overall, here’s the recap of technical specs of this barrel: 9mm caliber, flame-fluted and drop-in profile, 1:10 barrel twist, and 1/2x28 TPI muzzle thread which will allow you to attach muzzle devices if you want.
Price: $204.25
Purchase here!
2. Griffin Armament ATM Sig Sauer P320 Compact Threaded Barrel
This barrel is crafted from billet machined 416R chromium stainless steel with great attention to detail. The 5-axis machining will ensure precise dimensions and an ideal geometric relationship between the barrel, slide, and locking lug.
Griffin ATM Barrel has honed and polished chambers which deliver an incredibly smooth surface finish.
This enhances reliability and ensures optimal performance across a wide range of ammunition, from training rounds to duty loads.
Designed with concealed carry users in mind, the Griffin ATM Barrel offers the versatility of accessory and suppressor support without sacrificing reliability. You can trust that this barrel will perform flawlessly when you need it most, providing you with the utmost confidence in your firearm.
The barrel is chambered in 9mm caliber and has a 1:10 twist rate, and features Micro Carry Comp made for concealed carry owners to get better recoil control and less muzzle flash without adding too much in gun size and weight.
Price: $186.00
Purchase here!
3. Agency Arms Sig P320 Compact Mid-Line Threaded Barrel
Agency Arms’ barrel is made to deliver great performance. This barrel is made to offer tighter tolerance, better chamber support, and optimized feed ramps compared to stock options.
It’s made of high-quality 416R Stainless steel which is a common choice when it comes to the durability of the barrel. This material is made to sustain the rigors of regular use while maintaining accuracy.
There are some common specifications between this barrel and previous ones: a 9mm caliber chamber and a 1:10 twist rate to deliver enough accuracy for your bullets.
The barrel is 3.9 inches long making your future handgun small and compact - almost ideal if you’re planning to use it as a concealed carry weapon.
Just beware of this: an Agency Arms barrel we’re writing about is made to be used only, and only with P320 compact guns (which you can conclude because of the barrel length). So if you're an owner of a regular size Sig P320 then you should pick another barrel.
Price: $210.00
Purchase here!
4. Killer Innovations Sig P320C Velocity Non-Threaded Barrel
Another great barrel when you decide to upgrade your Sig P320 compact.
As you probably know, Kill Innovations is a well-known brand on the market when it comes to its products. If you’re thinking about buying any product from this company, you don’t have to think twice.
This velocity non-threaded barrel is a great option for your compact Sig P320 especially if you’re going to use it as a concealed carry weapon.
Also, with this barrel, you can be sure it will withstand rigorous use and harsh conditions without letting you down.
As for technical specifications, this barrel does not offer anything different: a 9mm chamber, a 1:10 twist rate for optimal performance, and a length of 3.862 inches.
Price: $249.00
Purchase here!
5. True Precision Sig P320 Compact 3.9" Threaded Barrel
True Precisions’ barrel can fit multiple types of Sig P320 including Compact, X-Carry, and M18 while X-Compact is unfortunately not supported.
The barrel is threaded, meaning it supports various types of muzzle devices, including suppressors which are becoming increasingly popular.
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Meeting SAAMI specifications, this barrel guarantees the safe chambering of ammunition. It surpasses the OEM barrel by offering an improved overall fit with added chamfers, improved radius cuts, and other enhancements.
These thoughtful design additions ensure a better-than-OEM barrel, giving you the confidence and performance you deserve.
Note: for certain X-Carry models, minor fitting adjustments may be necessary to achieve optimal compatibility.
As for technical specifications, the barrel is chambered in 9mm caliber, has 1/10LH twist rifling, and has a length of 3.9 inches only.
Price: $208.99
Purchase here!
Conclusion
To sum it up, we made a list of some of the best barrels for your P320 handgun as well as a few tips on how to choose your next handgun barrel.
For further reading, you can take a look at the 5 Best Pistol Red Dot Sights to improve your pistol even further and your overall shooting experience.
