Build out your custom gun with the Sig P320 upgrades you need to carry and shoot better. Sig Sauer pistols are popular with civilians and government agencies thanks to their quality and reliability, but customizing them can get expensive if you’re using OEM parts. Aftermarket Sig Sauer parts give you the performance you need at a friendlier price point. Make sure your gun is ready for the range or self-defense with pistol upgrades that help your gun do more.
The Sig Sauer P320
The successor of the P250, Sig’s first modular pistol to hit the commercial markets, the P320 uses a modular Fire Control Unit (FCU) comprised of most of the mechanical parts that make a handgun fire. This serialized part can be dropped into any compatible frame and paired with any compatible barrel/slide combination to create a fully functional handgun. This makes it far easier to customize than some handgun models, as it’s purpose-built for easy parts exchange and replacement.
That doesn’t mean that every P320 out there has already been tailored to the shooter’s preferences. A “baseline” model has plenty of room for Sig P320 upgrades to make a big impact. More advanced models may have more features from the factory, but wear and tear will always win eventually. In addition, many P320 owners bought their guns on the secondary market to avoid the “new gun premium,” which means they had no say in the features or configuration straight from the factory.
Finding Your Customization Target
Before you pick up an Allen wrench or start spending your hard-earned money on Sig P320 upgrades, you need to make sure you’re buying the aftermarket Sig Sauer parts that will most likely give you the results you’re looking for. A gun that’s tweaked to offer better performance in shooting competitions may not be as effective for concealed carry, and vice versa. Taking the time to identify your primary shooting needs and the qualities or features that would help you meet them is an important first step for any successful build.
Top Sig P320 Upgrades
While every build is different, some Sig Sauer custom parts offer broader utility, making them more common than other upgrades. Consider how these popular gun mods may be the ticket to better shooting.
Match-Grade Barrel
Match-grade barrels are engineered to precise tolerances to handle the heat and pressures created by premium ammunition while also imparting the perfect spin on a bullet to improve its accuracy. That’s a lot to ask from a short piece of metal. Look for resilient stainless steel construction that has a finish that both looks good and protects the steel from the corrosive effects of the propellant and your pistol cleaning chemicals. This helps ensure your barrel will have a long service life as long as it’s properly maintained.
Custom P320 Slide
The OEM slide for most P320 models is…straightforward. The quality is phenomenal, but there aren’t a lot of bells and whistles. In short, it looks really similar to most other mass-market pistol slides out there. Custom slides may have weight-reducing cutouts, deeper serrations for easier racking and handling, and optics-ready pre-milling to make installing a red dot sight easier. Upgrade to a Sig P320 slide that ticks all your performance boxes, is made from durable steel, and has a finish that keeps it safer from the elements and rugged use.
Pistol Optics
Modern pistol optics are becoming ubiquitous on custom guns for sport shooting, personal defense, and duty carry. Reflex or red dot sights secure to the top of your slide, replacing your iron sights with an intuitive and easy-to-use sight picture. Look through the lens, line the dot or reticle up on your aiming point, and fire. These used to require custom gunsmithing that could drive up the cost of your Sig P320 upgrade project, but today’s optics-read slides make installing a high-performance optic as easy as turning a few screws. Look for an optic with a larger window that provides faster target acquisition for competition shooting, a smaller window for less risk of snagging clothing if you plan on concealed carry, or whichever size you’re most comfortable with for general use.
Extended Magazines
Magazines remain one of the most common Sig Sauer custom parts. You can use them as replacements for your OEM mags or in addition to the stock magazines for more fun at the range. The P320 comes with 10-, 17-, and 21-round magazines from the factory, but aftermarket mags are available in a wider range of capacities and styles, including metal and polymer options. Choose flush magazines for easier carry, but longer extended magazines can help add weight and stability while giving you the firepower for longer engagements.
Our Pick For an All-Around Sig P320 Upgrade
We engineered the Revelation P320 to be the ultimate upper receiver upgrade for the Sig P320. Available as a stripped slide, slide with quality internal Sig Sauer custom parts, or a complete assembly with slide, internal parts, and barrel in either nitride black or TiN (gold). You can even add a practical Gideon Optics red dot sight for a discounted price to make your upgrade an even better deal. The Revelation slide features deep serrations, cutouts to reduce weight (and show off your match-grade barrel), and an optics-ready design. Put it all together, and you have an opportunity to make your gun easier to carry, more accurate, and better looking in one package deal.
Order Your Sig Sauer Custom Parts Online
We’re proud to offer quality parts that go head-to-head with the big names but come with a smaller price tag. Build a better gun and save some money for more ammo. Order your Sig P320 upgrades from Patmos Arms today.