Description
The SIG Sauer P365 380 ACP 3.1″ 10+1 MA Compliant is a micro-compact striker-fired pistol built for shooters who want a smaller, softer-shooting concealed carry option without sacrificing capacity or reliability. Chambered in .380 ACP, this MA-compliant variant ships with two 10-round magazines, an optic-ready slide, and a manual safety—all in a frame that fits smaller hands and runs flat.
| Manufacturer | SIG Sauer (per manufacturer specs) |
|---|---|
| Model | P365 380 ACP |
| Material | Stainless steel slide, polymer grip module |
| Compatibility | SIG Sauer P365 holsters and magazines (380 ACP specific) |
| Finish | Nitron black |
| Weight | 15.7 oz (empty, per manufacturer specs) |
| Condition | New |
Key Features
- .380 ACP Chambering – WHY IT MATTERS: Reduced felt recoil and muzzle flip let you stay on target for faster follow-up shots, especially for shooters with smaller frames or less hand strength.
- Optic-Ready Slide – WHY IT MATTERS: Direct-mount footprint for popular micro red dots (e.g., RomeoZero) means you can upgrade to a reflex sight without milling or adapter plates.
- 10+1 Capacity with Two Magazines – WHY IT MATTERS: 11 rounds of .380 ACP on tap in a pocketable package, and a spare mag gives you 21 total—no compromise on defensive loadout.
- Manual Safety – WHY IT MATTERS: Adds an extra layer of carry security for those who prefer a thumb safety, meeting MA compliance while giving you control over the trigger block.
- Compact Dimensions (5.8″ length, 1.0″ width) – WHY IT MATTERS: Slips into a waistband or pocket holster without printing, and the short grip length accommodates smaller hands comfortably.
Who It’s For
This pistol is for the concealed carrier who wants the proven P365 platform but prefers .380 ACP for its lighter recoil and easier handling. It’s ideal for new shooters building a defensive carry gun, anyone with arthritis or hand issues, and experienced carriers who want a backup or deep-concealment piece that still holds 10+1 rounds.
Pros & Cons
- Pro: Recoil is noticeably softer than 9mm P365—allows quicker split times on target.
- Pro: Optic-ready out of the box saves you $50-100 in milling costs.
- Pro: MA-compliant with manual safety means it ships directly to your FFL in Massachusetts with no extra hoops.
- Con: .380 ACP defensive ammo offers less terminal energy than 9mm—consider your ammo choice carefully for self-defense.
Comparison
| Feature | SIG Sauer P365 380 | Zev Technologies OZ9 Compact | Agency Arms AOS Glock 26 |
|---|---|---|---|
| Caliber | .380 ACP | 9mm | 9mm |
| Capacity | 10+1 | 15+1 | 10+1 |
| Barrel Length | 3.1″ | 4.0″ | 3.4″ |
| Weight (empty) | 15.7 oz | 24.5 oz | 21.7 oz |
| Optic Ready | Yes | Yes (RMR) | No (requires cut) |
| Manual Safety | Yes | No | No |
| Price | $499.99 | $1,200+ | $900+ |
FAQ
Is this pistol legal to carry in Massachusetts?
Yes, the SIG Sauer P365 380 is marked as Massachusetts-compliant, meaning it meets the state’s approved roster and includes a manual safety. Check your local city/town ordinances for any additional restrictions.
Does the optic-ready slide work with any red dot?
The slide is cut for the SIG Sauer RomeoZero footprint. You can also use adapter plates for other micro dots like the Holosun 407K or Shield RMSc, but direct mount is limited to SIG’s pattern.
What holsters fit this MA-compliant model?
Any SIG Sauer P365 holster designed for the 3.1″ barrel will fit, as the external dimensions are identical to the 9mm version. Just confirm the holster allows for the manual safety if you plan to carry with it engaged.
Can I use 9mm magazines in this .380 ACP model?
No, the magazine geometry and feed lips differ between .380 and 9mm. Only use P365 380-specific magazines (the two 10-rounders included) to ensure reliable feeding.
Is the trigger pull weight different from the 9mm P365?
Per SIG Sauer specs, the trigger pull is the same 5.5-6.5 lb range. The .380’s reduced slide mass may make the trigger feel slightly lighter, but the mechanism is identical.
Why Buy from Us
- ✓ Nationwide delivery (all 50 states) – ships to your FFL
- ✓ Ships 1-2 business days from order
- ✓ 30-day returns on unused, unfired firearms
- ✓ Secure checkout with encrypted payment
Looking for more options? Check out our Semi Auto Handguns or Concealed Carry Gear. For holsters, browse our Holster Collection.
Last updated: April 2026
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