Are you looking for a new threaded barrel for your SIG Sauer P320? If so, you’ve come to the right place.
Best Overall: SIG Sauer P320 Factory Threaded Barrel
The SIG Sauer P320 Factory Threaded Barrel is our choice for a P320 threaded barrel for the fact that this is one of the most durable and long lasting P320 threaded barrels that the marketplace has to offer. Heat treated and coated in a nitride finish, this P320 barrel also ships with a knurled thread protector to protect the threading to ensure that the threads are kept protected when not in use.
Budget Pick: Silencerco SIG Sauer P320 Threaded Barrel
The Silencerco SIG Sauer P320 Threaded Barrel is a solid pick for a P320 barrel for the money. It’s precision machined to meet factory specifications as set by SIG Sauer, comes with a 1:10 twist rate to ensure excellent accuracy, and comes with a very rust and corrosion resistant nitride finish.
Value Pick: Grey Ghost Precision SIG Sauer P320 Barrel
The Grey Ghost Precision SIG Sauer P320 Barrel is an overall superb value for the money. Even though it’s expensive, it’s also a match grade barrel designed for optimal accuracy with its 1:10 twist rate. The black nitride finish ensures that it will be very wear and corrosion resistant.
The SIG Sauer P320 is a pistol that has gained much popularity since its introduction in 2014. This popularity in the civilian market accelerated following its adoption as the standard issue sidearm for the United States military in 2017 as the M17 and the M18 pistols.
As a result, there are more aftermarket component and accessories for the P320 now than there ever has been before. One such component that you may need to get for your P320 is a threaded barrel; this will especially be an important item to get if you are planning on purchasing a suppressor for your pistol.
In this article, we’ll dive into the history and development of the P320 platform, the reasons to consider getting a threaded barrel, the top qualities to look for in a barrel, and then our choices for the top three best P320 threaded barrels in 2021.
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History and Development of the SIG Sauer P320
The SIG Sauer P320 is notable for being one of the first modular semi-automatic striker fired pistols to hit the market. Available in 9mm Luger, .357 SIG, .40 S&W, and .45 ACP, the P320’s modularity means that it can easily be converted from one caliber to the next. For example, switching from 9mm to .40 S&W requires a simple caliber exchange kit while keeping the same firing mechanism and slide.
The P320 represents the striker fired version of the earlier double action only hammer fired P250. The 9mm version of the P320 was released first in 2014, and the versions in the other calibers followed the next year.
SIG Sauer entered the P320 into the M17 Modular Handgun System Competition to replace the aging Beretta M9. By the end of the trials, the P320 had emerged victorious over numerous other applicants, including the Glock pistol and the Smith & Wesson M&P.
The military has currently adopted two versions of the P320: the M17, which is the full-sized version, and the M18, which is the carry sized version. The process of phasing out the Beretta M9 in favor of the M17 and M18 pistols is currently ongoing and will continue for the next few years. The version of the P320 selected by the US military is in the 9mm Luger caliber.
SIG Sauer pistols in general have long served military and law enforcement units all over the globe. The P210 pistol, for instance, was adopted as the standard issue sidearm of the Swiss military following the conclusion of World War II. In the 1970s, SIG unveiled their 220 line with the P220 pistol in .45 ACP, which proved to be an enormous hit for the company and was adopted by militaries and law enforcement units all over the world.
In the 1980s, SIG created a double stacked, 9mm version of the P220 called the P226. The P226 barely lost out to the Beretta M9 in 1985, and the main reason was due to the fact that the Beretta was available for a slightly cheaper overall cost. Thus, it seemed fitting that the P320 would be selected as the military’s next sidearm. It’s also worth noting that the P320 beat out the Beretta M9A3, an improved version of the M9 that Beretta had submitted for consideration.
The 220 series of pistols represented the flagship series of pistols in SIG’s lineup for decades, up until the P320 was released in the mid-2010s. The big standout feature to the P320, as already mentioned, is its modularity. Beyond swapping between calibers, the modularity also means that you can easily swap between frame sizes.
For example, you can buy just one fire control unit and the three available frames (full size, compact, and subcompact). When you need to alternate as appropriate, simply take out your fire control unit from one frame and place it into the next frame (just make sure that you get the appropriately sized barrel and slide as well).
There are also many variations available to the P32. The P320-M17, according to SIG Sauer, is designed to closely replicate the actual M17 that has been adopted by the United States military. To this end, it comes with a frame mounted thumb safety as well as a coyote tan finish.
Another popular variant to the P320 is the P320 X5 model, which comes with improved ergonomics, a skeletonized trigger, and a much lighter trigger pull. The X5 is primarily designed for competition use, but can be used for tactical or home defense purposes as well.
The P320 has spawned a new era of modular striker fired pistols. For example, the new Beretta APX (released in 2017) is also modular and follows the same design principles. A strong argument can be made that the P320 has had the most significant impact on the development of striker fired pistols since the original release of the Glock 17 in 1983.
Why Go With A Threaded Barrel For Your SIG Sauer P320?
Why should you add a threaded barrel to your SIG Sauer P320 pistol? There are many pros and cons to doing so.
But before we dive into this, we first need to answer this question: what even is a threaded barrel in the first place?
A threaded barrel is simply a slightly extended barrel that protrudes slightly out of the muzzle of your P320’s slide. There are threads on the protruded part of the barrel that allow you to add a variety of different muzzle devices, including muzzle brakes and most notably suppressors.
The overwhelming majority of people who buy threaded barrels for their P320 pistol do so in order to add a suppressor to it. Note that it’s impossible to add a suppressor to your P320 without also having a threaded barrel.
So, why should you add a suppressor to your P320?
While many people have this idea in mind that suppressors are meant only for secret agents or tactical purposes like they see in the movies, the truth is there are not one but two very practical reasons to buy a suppressor for your pistol.
The first reason is to minimize noise for a home defensive scenario. Guns are extremely loud when fired in indoor conditions, to the point that they can severely disorient your hearing. Suppressors do not eliminate the noise of a gunshot, but they do minimize it substantially. In a home defense situation, this is a major benefit.
Another reason to get a suppressor is to reduce noise at the shooting range. Furthermore, if you live in a more rural region and can shoot in your property but are still in relatively close proximity to your neighbors, a suppressor means that you can shoot your pistol all day long without disturbing anyone else.
Again, a threaded barrel will be necessary if you want to own a suppressor for your SIG Sauer P320.
However, there are cons to going with a threaded barrel as well. The first is that it adds a little bit of length to your weapon. While this may not seem like a major issue, the truth is that it limits the number of holsters that you can use your P320 for.
Any P320 holster that is closed at the bottom, for instance, cannot be used with a P320 with a threaded barrel. Instead, you’ll need to go with holsters designed specifically for the P320 with a threaded barrel or holsters that are open at the bottom so the threaded barrel can protrude through it.
Furthermore, if you aren’t planning on using a threaded barrel or some other kind of muzzle device with your P320, a threaded barrel will most likely not be necessary for you to buy.
The good news is that it’s very easy to install a threaded barrel to any P320. Simply field strip the weapon, remove the old barrel, place in the new threaded barrel, and reassemble the weapon as you always do. At that point, you’re ready to go.
One final note is to research which version of the P320 your threaded barrel is designed for. Beyond the basic sizes of the P320 (full size, compact, and subcompact), there are different specific versions of the P320 as well (such as the M17 model that we discussed above).
Some P320 threaded barrels are designed for literally any P320 pistol, while others are not. Again, carefully research which models of the P320 your threaded barrel of choice is designed to be used with.
Buyer’s Guide For The best SIG Sauer P320 Threaded Barrels
These are the most important factors to consider when looking for a new threaded barrel for your SIG Sauer P320 pistol:
Make sure that your threaded barrel is as durable as possible to ensure that it will hold up well over the years. The ideal P320 threaded barrel will be built out of 416R stainless steel and come coated in a very rust and corrosion resistant finish such as nitride. While you can go with carbon steel for a P320 barrel if you want to save money, note that carbon is not quite as durable as stainless steel.
As you are probably aware, there are several SIG Sauer P320 pistols on the market today, including the X5 and the M17 variants. While most P320 threaded barrels should work with all P320 pistols, note that there are some barrels that will work for all P320 pistols but not for the X5 or the M17.
Also note that there are three primary sizes for the P320: the full size, compact, and subcompact. It’s your responsibility to find out what type of P320 your barrel is designed for.
Last but not least, the ideal P320 threaded barrel will offer superior accuracy to the P320 factory barrel. Make sure that your P320 barrel comes with a 1:10 twist rate, which is considered optimal for the 9mm round.
The 3 Best SIG Sauer P320 Threaded Barrels For 2021
Now that we’ve covered why you need to upgrade your P320 with a threaded barrel and the best qualities to look for in one, here are our top three choices for a SIG Sauer P320 threaded barrel in 2021:
Silencerco SIG Sauer P320 Threaded Barrel
The Silencerco Threaded Barrel works for both the SIG Sauer P320 and the hammer fired P250 pistol. There are also two versions of this barrel: one for the full size P320 pistol, and one for the compact model.
The Silencerco coms coated in a nitride finish, which makes it very rust and corrosion resistant. The 1:10 twist rate of this barrel helps to ensure overall excellent accuracy. It’s also been precision machined to factory specifications to ensure that it will work reliably out of the P320 platform.
Just take note that the Silencerco will not work with the X5 or M17 models of the P320, so keep this in mind. However, it is compatible with all other versions of the P320 so long as they are the full size or compact versions.
All in all, the Silencerco is a solid pick for a SIG Sauer P320 threaded barrel. Available for both the compact and the full size models of the P320.
- Very easy to install
- Also works with the SIG Sauer P250
- Precision machined to factory specifications
- Will not fit the X5 model of the P320
- Will not fit the M17 model of the P320
SIG Sauer P320 Factory Threaded Barrel
The SIG Sauer P320 Factory Threaded Barrel comes from the factory ready to install in your SIG Sauer pistol. This barrel ships with a knurled thread protector to ensure that the threads of the barrel are kept protected when the barrel is not in use.
The overall barrel comes with a nitride finish for excellent rust and corrosion resistant, and the fact that it’s heat treated (unlike most barrels on the market) means that this barrel will be as long lasting and durable as possible.
Overall, the SIG Sauer P320 Factory Threaded Barrel comes ready directly from SIG’s factory to install in your P320 pistol. This barrel has been heat treated to ensure maximum durability, while the nitride finish ensures solid wear and corrosion resistance as well.
- Factory barrel
- Comes with a knurled thread protector
- Heat treated to ensure maximum durability
- Very expensive for a threaded barrel
Grey Ghost Precision SIG Sauer P320 Barrel
The Grey Ghost Precision SIG Sauer P320 Barrel is a match grade barrel designed for optimal accuracy out of the P320. To this end, it comes with 1:10 twist rate, which is considered more than ideal for the 9mm round.
The Grey Ghost is also built out of 416R stainless steel with a nitride finish for excellent rust and wear resistance. It comes SAAMI rated and designed to handle the hottest 9mm ammunition. The Grey Ghost is also available in both threaded and non-threaded versions.
The Grey Ghost Precision SIG Sauer P320 Barrel is an overall excellent value for the money. It’s a match grade barrel built for optimal accuracy and comes with a black nitride finish to ensure excellent rust and corrosion resistance. It’s also available in both threaded and non-threaded configurations.
- Built out of 416r stainless steel
- Match grade barrel to ensure excellent accuracy
- Available both threaded and non-threaded
- Built to SAAMI specifications to handle hotter 9mm loads
- Costly for a threaded barrel
And that concludes our list of the top three best threaded barrels for the SIG Sauer P320 for this year.
A threaded barrel will be a necessary item to get for your P320 if you plan on getting a suppressor for your weapon. Any one of the threaded barrels that we have covered in this article will be a solid option to go with. Alternatively, you can also go with any other threaded barrel that meets the criteria we listed and described before.