SIG SAUER P229 .40 S&W/.357 SIG 10-Round Magazine

SIG SAUER P229 .40 S&W/.357 SIG 10-Round Magazine

This genuine SIG SAUER magazine provides a factory spare or replacement for compatible P229 pistols chambered in .40 S&W or .357 SIG. It holds ten rounds and uses a blued-steel body with a dark finish. The exact model-specific configuration makes it a practical addition for range use, training, magazine rotation, or replacement of a damaged or worn magazine.

Built for Compatible P229 Pistols

The magazine is designed around the SIG SAUER P229 platform and the shared magazine geometry used by the .40 S&W and .357 SIG chamberings. It is not a 9mm P229 magazine, and it should not be selected for another SIG pistol merely because the exterior dimensions appear similar. Matching the model, caliber family, capacity, and manufacturer part number is the safest way to identify the correct magazine.

Ten-Round Capacity

The ten-round configuration is useful where that capacity is preferred or required and gives shooters a clearly identified option for practice and equipment rotation. Keeping multiple magazines available reduces time spent reloading the same magazine during a range session and makes it easier to track performance. If a malfunction consistently follows one magazine, that unit can be removed from service for inspection while the others remain available.

Blued-Steel Construction

The steel magazine body is finished in a dark blued appearance. Steel construction provides the rigidity expected from a duty-style detachable pistol magazine, while the finish helps distinguish it from stainless versions in a mixed collection. As with any magazine, inspect the feed lips, body, follower movement, and spring tension periodically. Keep the interior free of dirt and use lubricant sparingly so residue does not accumulate inside the tube.

Key Features

• Manufacturer: SIG SAUER
• Compatible model: SIG SAUER P229
• Compatible chamberings: .40 S&W and .357 SIG
• Capacity: 10 rounds
• Material: Steel
• Finish/color: Blued / dark blue-black
• Type: Detachable factory pistol magazine
• Manufacturer part number: MAG2294310 / MAG-229-43-10
• UPC: 798681408931
• Package quantity: One magazine

Confirm the Exact Configuration

Before ordering, verify that the pistol is a compatible P229 chambered in .40 S&W or .357 SIG. This magazine is not intended for P229 9mm models, and the ten-round capacity should also be checked against applicable state and local restrictions. Comparing the pistol’s markings and existing factory magazine with the MPN and UPC above helps prevent confusion with similar-looking P229 magazines in different calibers or capacities.

Loading, Testing, and Care

Load only ammunition matching the firearm’s chambering, and function-test the magazine with the individual pistol in a safe range environment. A new spring may feel firm during initial loading. Never bend the feed lips, cut the spring, or alter the body to force fit or capacity. If the magazine does not seat, lock, feed, or release normally, unload the firearm and magazine and consult the owner’s manual or a qualified armorer.

With its factory SIG SAUER identity, ten-round capacity, blued-steel construction, and exact P229 .40 S&W/.357 SIG fit, this magazine is a straightforward way to add a correctly matched spare to a working P229 setup.