SIG P385: SIG Sauer’s Next Duty Pistol Is Starting to Take Shape

SIG filed the U.S. trademark application for P385 on December 21, 2025, under serial number 99559632.

The application covers firearms and a wide range of related products, including magazines, firearm components, suppressors, sights, triggers, grips, cases and holsters. That broad language is typical of SIG's firearm trademark filings. It does not mean every item listed will become a dedicated P385 product, but it clearly places P385 within SIG's firearm business.

The application received a nonfinal office action on April 29. SIG responded on May 24, the mark was approved for publication on June 17, and it was published for opposition on July 14.

That progression matters. SIG did not simply file the name and leave it dormant. The company continued working the application through the trademark process.

SIG also pursued the name internationally. A P385 designation covering the same firearm-related categories was filed in the United Kingdom through the international trademark system on May 12, claiming priority to the December U.S. application. The UK Intellectual Property Office published the designation on July 24.

A U.S. filing alone could be defensive trademark housekeeping. Filing internationally, responding to examination issues and carrying the application through publication looks more like preparation for a product SIG expects to use.

The description circulating around the P385 is remarkably specific.

The current rumor is that SIG has developed a new duty-size handgun using the basic architectural approach of the P365, enlarged to approximately P320 dimensions. The pistol is also said to use P320 magazines.

The first substantial public discussion appears to have followed a March 2026 Focus Clipps video titled SIGs Next Handgun - P385. That report described the P385 as a successor to the P320, built around modified P365-style internals and a full-size frame.

The same description surfaced again in a June r/SigSauer discussion. A commenter stated that the P385 would effectively be a larger P365 that accepts P320 magazines. Another claim in the thread was that the pistol would initially be aimed at law-enforcement sales.

On August 9, the larger-P365 and P320-magazine description appeared again. That later comment came from the same Reddit account involved in the June discussion, so it should not be treated as an independent second source. It does, however, show that the story has remained consistent rather than mutating into several incompatible versions.

The core rumor can be reduced to three points:

• A new full-size striker-fired SIG pistol
• A fire-control system derived from the P365 design
• Compatibility with existing P320 magazines

Of those three, P320 magazine compatibility would be the most strategically important.

SIG already makes a large P365.

The P365-FUSE uses a 4.3-inch barrel, reaches 7.2 inches in overall length and ships with 17- and 21-round magazines. It is close to full-size handgun dimensions while retaining the P365 family's narrow 1.1-inch width. SIG markets it as the point where concealed-carry dimensions begin to overlap with full-size capability.

A P385 designed around P320 magazines would be a different kind of product.

P320 magazines are wider than P365 magazines. Building a pistol around them would require a wider grip and different magazine-well geometry. The existing P365 FCU could not simply be dropped into a larger grip module with a P320 magazine inserted underneath it.

The more likely interpretation is that SIG has developed a new fire-control unit influenced by the P365's design, but scaled and reinforced for a full-size duty gun.

That could include:

• A larger serialized chassis
• Full-size operating components
• A wider grip module built around P320 magazines
• A duty-length accessory rail
• Larger controls
• Revised recoil and locking components
• A new slide and barrel family

In other words, "full-size P365" is useful shorthand, but the P385 would likely be its own platform rather than another P365 grip and slide combination.

A completely new duty pistol creates a logistical problem. Police departments, military organizations, dealers and individual owners may already have substantial investments in magazines, holsters, spare parts and training.

SIG can replace some of that equipment more easily than others.

Maintaining P320 magazine compatibility would allow SIG to introduce a new handgun while preserving the most widely distributed part of the existing P320 ecosystem. Agencies could begin transitioning pistols without immediately replacing every magazine in inventory. Commercial P320 owners would also have a ready supply of compatible magazines from SIG and numerous aftermarket manufacturers.

That would make the P385 much easier to adopt than a clean-sheet pistol with an entirely proprietary magazine.

Magazine compatibility would not necessarily extend to P320 grip modules, slides, holsters or internal parts. A differently shaped slide and frame would probably require a new holster ecosystem, while a P365-derived chassis would eliminate most internal compatibility with the P320.

The magazine is the component where backward compatibility provides the greatest benefit without forcing SIG to carry over the rest of the P320 design.

Describing the P385 as a P320 successor does not mean SIG is about to discontinue the entire P320 family.

The P320 remains deeply embedded in SIG's product line. It supports the M17 and M18 military programs, law-enforcement contracts, competition pistols, Custom Works configurations, AXG models and premium Legion variants. SIG also continues to secure institutional business with the platform.

That installed base will not disappear when a new pistol launches.

A more realistic strategy would be to introduce the P385 alongside the P320, then gradually position it as SIG's preferred platform for new duty and commercial contracts. Standard P320 models could be reduced over time while military, competition and premium versions remain in production.

This would resemble a platform transition rather than an immediate replacement.

The P385 could become the pistol SIG recommends for new agencies and first-time institutional buyers, while the P320 continues supporting customers already committed to it.

That approach would also explain the rumored law-enforcement emphasis. Institutional adoption would give SIG a strong foundation for the platform before expanding the P385 into compact, competition, premium and consumer-oriented variants.

The P365 has become one of SIG's most important commercial platforms. Its serialized fire-control unit supports a large range of grip modules, slides, barrel lengths and capacities while remaining compact enough for concealed carry.

Scaling that design philosophy upward would let SIG apply the same modular strategy to the duty-pistol market.

A new P365-derived full-size chassis could also give SIG an opportunity to redesign areas that are difficult to change within the existing P320 system. SIG could alter the sear arrangement, trigger geometry, internal safeties, slide interface, recoil system and force distribution while retaining the removable serialized-chassis concept.

That matters because the P320 is no longer a young platform. Its basic design is more than a decade old, and SIG has continued modifying it through updated components, slides, grip modules and internal revisions.

At some point, developing a new chassis becomes more practical than continuing to evolve the original one.

The P385 would give SIG a clean starting point while retaining the two ideas that made its recent pistol families successful: modular construction and broad configuration flexibility.

SIG has previously filed firearm trademarks well before a broad commercial launch.

The company filed the P211 trademark on January 13, 2025. The P211-GTO appeared publicly at SIG NEXT in June 2025, and SIG formally introduced the commercial P211-GT4 and GT5 models in January 2026.

The filing therefore preceded the public preview by approximately five months and the wider commercial introduction by roughly one year.

The P385 filing is now eight months old. Its U.S. publication and international expansion place it within a realistic window for a late-2026 preview or early-2027 commercial launch.

SIG has also filed a P265 trademark, although no corresponding pistol has appeared publicly. That suggests the company may be protecting several possible model names while developing its next generation of handguns.

P385 currently has the stronger rumor trail of the two.

The strongest timing rumor points to SIG NEXT 2026.

SIG used SIG NEXT in 2024 and 2025 to introduce new firearms, optics, suppressors and ammunition. The 2025 event ran from June 17 through June 19 and included several major product announcements.

No official 2026 date has appeared on SIG's public NEXT page. However, an August 16 r/SigSauer update claimed that Team SIG shooter Mason Lane had privately confirmed the event was still happening. The same update attributed a September date to RDR Gear, which reportedly said SIG delayed the event so it could build sufficient inventory before releasing the new products.

That inventory explanation fits the way SIG operates. SIG NEXT is not simply a media preview. It is a coordinated product-launch event, and there is little value in generating demand for a pistol that dealers cannot obtain for several more months.

It would also explain the unusual silence surrounding the 2026 event. Rather than holding SIG NEXT on its previous summer schedule, SIG may be aligning the event with finished inventory and immediate dealer availability.

The July 14 publication of the P385 trademark adds another useful timing signal. A September launch would place the announcement after the mark had completed its initial publication period and after SIG had expanded its international filing.

None of the SIG NEXT reporting establishes that the P385 will be there, but it is the most logical venue and timing for the pistol to appear.

Based on the trademark activity, SIG's existing platforms and the repeated community description, the most likely P385 is a modular, full-size striker-fired pistol intended for duty use.

It will probably use a newly designed serialized fire-control chassis rather than the current P365 FCU. The grip will need to be wider than a standard P365 to accommodate P320 magazines, placing its dimensions closer to the P320, P226 and other traditional duty pistols.

SIG would likely launch it with:

• A full-size slide and barrel
• An optics-ready slide
• A standard accessory rail
• Interchangeable grip modules
• Ambidextrous or reversible controls
• P320-pattern magazines
• Duty and law-enforcement configurations

Compact and premium versions could follow once the base platform is established.

SIG has repeatedly expanded successful pistol platforms into entire families. The P365 grew from one micro-compact pistol into the XL, XMACRO, AXG Legion, FUSE and numerous specialized variants. The P320 expanded into compact, carry, full-size, competition, military and metal-frame configurations.

There is little reason to believe the P385 would remain a single-model product.

The SIG P385 is a real product name tied to an active and internationally pursued firearm trademark.

The most credible description is a new duty-size pistol that applies P365-style fire-control architecture to a larger handgun built around P320 magazines. That combination would let SIG introduce a substantially redesigned platform without discarding the enormous magazine base created by the P320.

The P385 would not need to replace every P320 immediately. Its more likely role is to become SIG's next mainstream duty platform, with the P320 continuing in military, premium, competition and legacy configurations.

The September SIG NEXT rumor gives SIG an obvious stage for the reveal. Whether the pistol appears there or later, the trademark activity suggests the P385 is moving closer to public release rather than sitting in SIG's collection of unused names.

The remaining question is no longer whether SIG filed P385.

It is how soon SIG intends to show us the gun.