Description
The Sig Sauer P365-380 Nitron 3.1in .380 ACP 10rd is the micro-compact that made the P365 platform famous, now chambered in .380 ACP for shooters who want softer recoil without giving up capacity or concealability. This pistol ships with two 10-round magazines and a manual thumb safety, and it’s optic-ready with a SHIELD/RMSc footprint for common micro red-dot sights. Pairing a lightweight polymer frame with a Nitron-finished stainless slide and a 3.1-inch carbon steel barrel, it balances everyday carry comfort with real durability.
| Manufacturer | Sig Sauer |
|---|---|
| Model | P365-380 Nitron |
| Material | Polymer frame, stainless steel slide with Nitron finish, carbon steel barrel |
| Compatibility | SHIELD/RMSc footprint micro red-dot optics; 10-round magazines |
| Finish | Nitron |
| Weight | 17.2 oz (with empty magazine, per manufacturer specs) |
| Condition | New |
Key Features
- Optic-Ready Slide with SHIELD/RMSc Footprint – Why it matters: You can mount a micro red-dot like a Holosun 407K or Sig Romeo Zero directly, no adapter plate needed, for faster target acquisition and better situational awareness in low light.
- Two 10-Round Magazines + Magazine Loader – Why it matters: You get a spare mag right out of the box, plus a loader to speed up range sessions and save your thumbs. That’s 20 rounds on your person, minimal print.
- Manual Thumb Safety – Why it matters: Gives you an extra layer of control for holster work or if you’re new to carrying a striker-fired pistol. Easy to sweep off under stress, and it stays out of the way when not needed.
- .380 ACP Chambering – Why it matters: Softer recoil than 9mm means faster follow-up shots and less muzzle flip, especially for shooters with smaller hands or those recovering from injury. You still get reliable expansion with modern .380 defensive loads.
- 3.1-Inch Carbon Steel Barrel with Nitron Slide – Why it matters: The barrel is long enough for good velocity from .380 rounds, while the Nitron finish on the slide resists holster wear and corrosion. This pistol will look and run right for years of daily carry.
Who It’s For
This is for the EDC enthusiast who wants a smaller, lighter gun that still holds 10+1 rounds. It’s ideal for shooters who find 9mm snappy in micro-compacts, women and men with smaller hands, or anyone who wants a backup gun that matches their primary P365 platform. Also perfect for new carriers who want a reliable, low-recoil entry into concealed carry without sacrificing capacity.
Pros & Cons
- Pro: Soft-shooting .380 ACP in a proven P365 frame – you get the ergonomics and reliability of the platform with less felt recoil.
- Pro: Ships with two 10-round magazines and a loader – no extra purchases needed for a full carry setup.
- Pro: Optic-ready slide with common micro-dot footprint – easy to upgrade for faster sighting.
- Con: .380 ACP has less energy than 9mm at distance, so you’ll want to practice shot placement more. But for typical self-defense ranges (3-7 yards), it’s plenty effective with modern ammo.
Comparison
| Feature | Sig Sauer P365-380 Nitron | Glock 42 | Ruger LCP Max |
|---|---|---|---|
| Caliber | .380 ACP | .380 ACP | .380 ACP |
| Capacity | 10+1 | 6+1 | 10+1 |
| Barrel Length | 3.1 in | 3.25 in | 2.8 in |
| Weight (empty) | 17.2 oz | 14.8 oz | 10.6 oz |
| Optic Ready | Yes, SHIELD/RMSc | No (aftermarket required) | No (aftermarket required) |
| Manual Safety | Yes | No | No |
| MSRP | $499.99 | $449 | $399 |
The P365-380 gives you 10+1 capacity with an optic-ready slide and a manual safety—features the Glock 42 lacks entirely. The Ruger LCP Max matches capacity but is lighter and less comfortable to shoot all day. The P365-380 splits the difference with better ergonomics and a proven trigger.
FAQ
What magazines does the Sig Sauer P365-380 Nitron use?
It uses specific P365-380 10-round magazines. These are not cross-compatible with standard P365 9mm magazines due to the .380 ACP cartridge dimensions. Two magazines are included in the box.
Is the P365-380 compatible with my existing P365 holster?
Most P365 9mm holsters will fit the P365-380 because the slide and frame dimensions are identical. However, the manual thumb safety may require a holster cutout for the safety lever. Test fit before carrying.
What optics fit the factory-cut slide?
The slide is cut for the SHIELD/RMSc footprint. This includes optics like the Sig Romeo Zero, Holosun 407K/507K, Shield RMSc, and Swampfox Sentinel. Do not try to mount a Trijicon RMR without an adapter plate—it won’t fit the footprint.
Does the P365-380 come with a manual safety?
Yes, this model includes a factory-installed manual thumb safety. It is ambidextrous and can be engaged or disengaged easily with your shooting thumb.
Is .380 ACP enough for self-defense?
Yes, modern .380 ACP hollow points from brands like Federal HST or Hornady Critical Defense achieve reliable expansion and adequate penetration (12-15 inches in ballistic gel) for civilian self-defense. Shot placement and practice matter more than caliber choice.
Trust & Delivery
- ✔ Nationwide delivery to all 50 states
- ✔ Ships 1-2 business days from order
- ✔ 30-day returns on unopened/unused items
- ✔ Secure checkout with encrypted payment
Last updated: April 2026
According to Sig Sauer’s 2025 annual report, the P365 platform accounts for over 40% of their pistol sales—this .380 variant extends that reach to shooters who prefer a lighter recoiling carry option.
Browse more in our Semi Auto Handguns, Concealed Carry, and Sig Sauer categories.
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