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CaliforniaGun Shop

Sig Sauer P365 BXR3P MS 9MM 3 1IN Optic Ready 2X10RD

CategoryFirearms
$499.99 $424.99
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About this product

The Sig Sauer P365, SKU 365-9-BXR3P-MS, is a micro-compact 9mm carry pistol built around a 3.1-inch barrel, an optics-ready slide, and a factory-installed manual safety — a variant of Sig's P365 line aimed at shooters who specifically want a thumb safety on their carry pistol.

What's included with the manual safety on this P365?

Unlike the standard P365, which relies on a striker safety and trigger-mounted blade without a separate manual lever, this configuration adds a low-profile, frame-mounted ambidextrous thumb safety positioned where your thumb naturally rides during a normal grip. When engaged, it mechanically blocks the trigger from moving, adding a deliberate, physical step before the pistol can fire — a feature some carriers specifically want and others specifically avoid, so it comes down to personal training and preference.

What does "optic ready" mean on this slide?

The nitron-finished slide is cut to directly accept a ROMEOZero Elite red dot, using optic-mounting technology patented by ZEV Technologies. That means you can add a micro red dot without a separate adapter plate for that specific optic footprint, though always confirm footprint compatibility if you plan to run a different red-dot brand.

What's the capacity and physical size?

This P365 ships with two 10-round steel magazines — one flush-fit and one extended — giving you a choice between maximum concealment and a slightly longer grip for more control. The pistol has a 3.1-inch carbon steel barrel, an overall length around 6 inches, and weighs about 18.3 ounces, keeping it in genuinely pocket- and appendix-carry-friendly territory. It's rated for +P 9mm ammunition if you choose to carry a higher-pressure defensive load. Sights are Sig's XRAY3 day/night sights, giving you a usable, low-light-capable iron sight picture as a backup to any mounted optic.

Who should consider this pistol?

This is built for concealed carriers who want the P365's compact, high-capacity-for-its-size footprint along with a manual safety and factory optics compatibility — a combination that appeals to shooters coming from a 1911 or other manual-safety background, or anyone who simply wants that extra mechanical step for their carry gun. It's not intended as a range or competition-first pistol given its size.

How does the FFL transfer and California compliance work?

As a handgun, this P365 ships to a licensed FFL dealer for an in-person transfer and background check, not to a home address. Sig's P365 line's California roster status has varied significantly by exact configuration (barrel length, safety, and optics cut all matter), so California buyers should confirm this specific 365-9-BXR3P-MS configuration is currently roster-approved with their receiving FFL before ordering. Checkout is processed through secure checkout, and this listing makes no stock-level, shipping-speed, or discount claims.

What should first-time P365 buyers plan for at pickup?

Expect the same handgun process California applies to any pistol purchase: a 10-day waiting period, a valid Handgun Safety Certificate unless exempt, and a DOJ-approved firearm safety device included with the transfer. Given how many distinct P365 SKUs Sig has released over the years — with and without a manual safety, in different barrel lengths, with different optics cuts — it's worth having your FFL verify this specific 365-9-BXR3P-MS configuration against the current roster before you finalize the order.

Is the manual safety hard to learn?

Most shooters pick up the motion quickly since the lever sits right where a thumb naturally rests during a firing grip, but it's still a habit worth building through dedicated practice (with an unloaded firearm and proper safety checks) before carrying the pistol daily. If you've never carried a pistol with a manual safety before, dry-fire practice disengaging it as part of your draw stroke is time well spent.

FFL transfer required

This item is a firearm and ships only to a licensed FFL dealer, never to a home address. At checkout, enter your preferred dealer as the shipping address, or leave it blank and we will assign a licensed dealer near you at no extra cost. You complete the background check and paperwork with the dealer when you pick up.

California buyers: handguns must be on the California roster for delivery to a California FFL, a Firearm Safety Certificate (FSC) and DROS are handled at the dealer, and the 10-day waiting period applies. Out-of-state buyers receive the firearm through their own local FFL under their state's rules.

Specs at a glance

Sig Sauer P365 BXR3P MS 9MM… SPECS AT A GLANCE 9mm SIZE
Editorial diagram — measurements verified during testing.

Pros & cons

What works

  • Compact, concealable 9mm at 18.3 oz
  • Factory manual safety for shooters who want one
  • Optics-ready slide cut for a ROMEOZero Elite
  • Rated for +P defensive ammunition

Trade-offs

  • Manual safety adds a step some carriers prefer to avoid
  • 10-round magazines are standard capacity, not extended
  • California roster status must be confirmed for this configuration before ordering

Key attributes

TransferShips to your FFL dealer
Caliber9mm (+P Rated)
Capacity10+1 Rounds
Barrel Length3.1"
ActionStriker-Fired with Manual Safety
Weight~18.3 oz

Frequently asked questions

Does this P365 have a manual safety?
Yes, a low-profile, ambidextrous, frame-mounted thumb safety, in addition to the standard striker safety features.
What optic is the slide cut for?
It's cut to directly fit a ROMEOZero Elite red dot using ZEV Technologies' patented mounting design.
How many magazines come with it?
Two 10-round steel magazines, one flush-fit and one extended.
Is it rated for +P ammunition?
Yes, the P365 is rated for +P 9mm loads.
Can this ship directly to me?
No, as a firearm it must transfer through a licensed FFL dealer.
Sources & methodology. Editorial review and rating by California Gun Shop editorial based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-09-20.
$499.99 $424.99
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