Sig Sauer P238 Extended Magazine .380 ACP 7 Round Stainless – MAG-238-380-7-X

The Sig Sauer P238 Extended Magazine in .380 ACP holds 7 rounds and is built in stainless steel under part number MAG-238-380-7-X. Spare magazines are the least exciting purchase a handgun owner makes and the one they regret skipping most often.

Pocket pistols live or die on magazine quality. The magazine is the single most common source of malfunctions in any semi-automatic firearm, and small guns are less forgiving than large ones.

What the Sig Sauer P238 Extended magazine offers

The Sig Sauer P238 Extended magazine is a factory 7 round unit for the P238, chambered in .380 ACP and constructed from stainless steel. The extended baseplate is what takes the magazine from standard capacity to 7 rounds.

The extension also lengthens the grip. On a pistol as small as the P238, that additional length is the difference between a two-finger grip and a full three-finger hold, which changes recoil control noticeably.

Anyone who carries a P238 should own several of these. Range shooters benefit from less loading time, carriers benefit from a spare, and everyone benefits from rotating magazines rather than leaving one loaded indefinitely.

Key features

• 7 round capacity in .380 ACP for the Sig Sauer P238 platform.
• Stainless steel construction for corrosion resistance and long service life.
• Extended baseplate that adds capacity and grip length in one part.
• Factory magazine built to the specifications the pistol was designed around.
• Direct drop-in fit with no modification or fitting required.
• Sold under part number MAG-238-380-7-X for confident ordering.

Specifications and why factory magazines matter

Capacity is 7 rounds, one more than the standard flush-fit magazine for this pistol. That single round matters more in a small handgun than it does in a duty gun, simply because the baseline capacity is so low to begin with.

Stainless steel is the right material for a magazine body that lives against the body. Sweat is corrosive, carry magazines see far more moisture than range magazines, and stainless resists that exposure without a coating to wear through.

Factory sourcing is the specification most worth paying for. Magazine feed lip geometry, follower shape, and spring rate are tuned to the pistol’s specific timing, and aftermarket magazines are where most reliability problems in small pistols originate.

The extended baseplate does double duty. It houses the extra round and it gives your little finger a place to rest, which meaningfully improves control on a pistol chambered in .380 ACP with a very short grip frame.

Practical use, rotation, and care

Buy more than one Sig Sauer P238 Extended magazine while you are at it. A carry gun should have a dedicated carry magazine plus a few range magazines, and rotating which magazine stays loaded prevents any single spring from taking a permanent set over months of storage.

Function check any new magazine before you carry it. Load it to capacity, run at least fifty rounds through it, and verify the slide locks back on empty every single time before it enters your carry rotation. A magazine that has not been tested is an assumption, not equipment.

Clean magazines periodically. Disassemble the baseplate carefully while controlling the spring, wipe the interior and the follower, and reassemble dry rather than oiled, since oil inside a magazine attracts lint and powder residue. A magazine that has been carried in a pocket needs this more often than one that lives in a range bag.

Inspect the feed lips for damage after any drop onto concrete. Bent feed lips cause failures to feed that shooters usually blame on ammunition, and a damaged magazine should be retired rather than repaired. Find more magazines and pistol components in our parts and upgrades collection.

Factory quality, an extra round, and a better grip make this an easy addition to any P238 setup from SIG Sauer. Ships direct to your door, no FFL required.