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Selected Handgun Detail

SIG
Model P239
SIG Pistol P239 .40 S&W Variant-4
Scale To:
Gun Dimensions Width:1.5-in
Length:6.6-in Height:5.2-in
Barrel:3.6-in Weight:27-oz
Variant 4 of 5
Gun Rankings
  • Power Factor (180 grain bullet)175320
  • Recoil Factor (180 grain bullet)7.97 ft-lb
  • Total Capacity8 rounds
  • ConcealabilityGood
  • Defense Factor79%
Gun Specifications
Type:Pistol
Caliber:.40 S&W
Action:recoil operated semi-automatic
Trigger:double-action (DA/SA)
Safety:frame mounted decock lever
Magazine:7-round
Frame:aluminum alloy
Grip:black polymer
Sights:SIGLITE night sights
Notes:two-tone, stainless slide
Manufacturer
SIG SAUER GmbH & Co. KG
More Info
About the Gun

The P239 is a compact, single-stack, double-action/single-action pistol available in three calibers. It features a stainless steel slide over an aluminum alloy frame and follows SIG’s traditional DA/SA operating system with a decock lever. The Nitron models have a black finish, while the Two-Tone versions feature a natural stainless slide with a black frame. The Rainbow Titanium variant adds a distinctive multi-colored finish on the .40 S&W model.

Production

Production ran from 2009 through 2018.

Market value
Last updated: 6/25/2026

MSRP at production was around $750–$900. Current used market value for examples in good to very good condition ranges $480–$620.

Cartridge Specifications
Cartridge: .40 Smith & Wesson
Alias: N/A
More Info
Ballistics for This Gun
Selected Bullet Mass:180 grains
MV:974 ft/sec ME:379 ft-lbs
Analysis

SIG developed the P239 in the mid-1990s in response to demand from law enforcement and federal agencies for a slim, single-stack compact pistol suitable for backup or off-duty carry. It was positioned as a more concealable alternative to full-size service pistols while still offering the handling and reliability characteristics associated with SIG’s larger models. The platform remained in production for over two decades with relatively few changes, primarily offered in Nitron and Two-Tone finishes across its three calibers. The later addition of the Rainbow Titanium finish on the .40 S&W model represented a cosmetic option rather than a mechanical change. The P239 was eventually discontinued in 2018 as SIG shifted focus toward newer compact designs.

User Rating
1 User Ratings
2 User Comments
User Comments

0 of 5 Stars
P239 .40 S&W
By TellicoBernie on 20 Feb 2025
Excellent little gun. Comfortable to carry and accurate as all get out.

5 of 5 Stars
Choice of those who protect POTUS
By Zelig on 13 Apr 2019
Compact version of the P228, DA/SA 40 caliber. Great for deep cover or back up. I find it highly accurate, extremely reliable and with a barrel swap fires the Sig 357 with same magazines. Very effective calibers in an excellent design. I rely on it for EDC.