Sig Sauer P239 .357 SIG
Model: 239-357-BSS
Sig Sauer P239 .357 SIG
Model: 239-357-BSS
Full Specifications
About This Firearm
The Sig P239 .357 SIG is the original single-stack carry pistol for the cartridge, and Sig discontinued it in 2018. New production stopped, but the gun developed a cult following among carriers who wanted .357 SIG ballistics in a 7+1 single-stack format that fit holsters and pockets a double-stack could not. At 29.5 oz with an alloy frame and 3.6" barrel in a 6.6" overall length, it is the heaviest single-stack pocket-class .357 SIG ever built, and the weight is what owners specifically cite as why they keep them running. The cartridge's sharp impulse hits hard in subcompact polymer guns like the Glock G33 Gen4 .357 SIG at 21.87 oz; the P239's alloy frame absorbs the same recoil meaningfully better, at the cost of being 7.6 oz heavier.
What the P239 has that no modern carry pistol matches is documented reliability in .357 SIG, a DA/SA action with a decocker for shooters trained on the Sig hammer system, and SIGLITE night sights from the factory. What it does not have is current production support, optic readiness, or the high-capacity micro-compact format the market moved to after 2018. The closest modern analog in 9mm is the Sig P365 XL 9mm, which weighs 20.7 oz (8.8 oz less), holds 12+1 (5 more rounds), ships optic-ready, and uses a striker trigger — a completely different design philosophy aimed at a different buyer. The P239 .357 SIG is now a used-market gun for shooters who specifically want the alloy-framed, DA/SA, .357 SIG single-stack platform and accept the trade-offs that come with a discontinued model. As an unusual collector piece and dedicated carry tool combined, it occupies a niche nothing currently produced fills.
Best For
Strengths & Limitations
- 29.5 oz alloy frame is dramatically softer-shooting in .357 SIG than the polymer Glock G33 at 21.87 oz. Owners consistently cite the weight as the main reason to choose the P239 over modern polymer subcompacts in the same caliber.
- True single-stack 1.2" width is narrower than any current double-stack .357 SIG pistol. SIGLITE night sights and the DA/SA decocker system ship from the factory.
- Discontinued in 2018. New units are not produced, and the used market is the only source. Prices have risen as the supply has contracted, which is the opposite trajectory of most subcompact pistols.
- 7+1 capacity is below most current subcompact carry pistols. The modern micro-compact 9mm class (P365, Hellcat, Shield Plus) typically carries 10-13 rounds in similar dimensions, though all at substantially lower weight.
- No optic cut, no rail on the .357 SIG variant, and no aftermarket optic mill path that does not involve significant slide work. Reflects the gun's late-1990s and early-2000s design priorities, not modern carry expectations.
Ballistics Calculator
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.357 SIG Ballistics →Where to Buy
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Frequently Asked Questions
Are parts and magazines still available for the P239 .357 SIG?
Yes, but the supply is shrinking. Sig still produces P239 magazines as of 2026, and most internal parts (springs, decocker components, pins, extractors) remain in the Sig parts catalog. Sights and holsters are widely available because the P239 was in production for nearly 20 years. The parts that occasionally cause sourcing difficulty are caliber-specific components like the .357 SIG recoil spring and barrel, both still exist new but are not always in stock. Owners report buying a spare recoil spring assembly when purchasing a used P239 is a good hedge against future supply contraction.
Why did Sig discontinue the P239?
The 2018 discontinuation tracked the market shift toward high-capacity micro-compacts after the original Sig P365 launched in 2018 and proved that 10+ rounds were achievable in a slimmer package than the P239's single-stack frame. The P365 family covered most of the use cases the P239 had served (concealed carry, backup gun, off-duty pistol) at lower weight and higher capacity. The hammer-fired DA/SA single-stack category essentially ended industry-wide around the same time as striker-fired micro-compacts took over the market.
What is a fair used-market price for a P239 .357 SIG today?
Used P239 .357 SIG pistols typically run $700-1,000 depending on condition, generation, and country of origin (German-marked early production commands a premium over later U.S.-marked guns). Pristine examples with original box and papers can exceed $1,200. Police trade-ins occasionally surface in the $550-700 range with holster wear but mechanically sound. Prices have trended upward since the 2018 discontinuation as the supply has contracted and the dedicated carry community has held on to working examples.
