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This is the standard-capacity magazine Sig Sauer designed specifically for the P229 platform. Built from heat-treated steel with a black phosphate finish, it holds 12 rounds of either .40 S&W or .357 SIG ammunition interchangeably, making it versatile for either caliber conversion or switching loads at the range.
Sig sources this magazine from multiple manufacturers and makes each one to exact specifications, so you get the same performance and fit as the magazines that shipped with your pistol. The steel body combines with a polymer follower and durable base plate to feed rounds consistently in any conditions. Witness holes on the side let you count rounds at a glance without ejecting the magazine. The flush-fit design means this mag sits flush with the grip, so it won't print during carry and won't catch on anything during the draw.
The P229 originally came designed around the wider magazine profile needed for .40 and .357 SIG, and that double-tapered geometry has stayed consistent across production. All P229 .40 and .357 magazines interchange without any fitment issues. Whether you're running a rail-less model or a modern railed version, this magazine works the same. If you own a newer P229-1 chambered in 9mm, just remember that it uses different magazines with narrower geometry, so cross-compatibility doesn't apply between caliber families.
One magazine, ready to use right out of the box. It pairs well with your existing magazines or stands alone as a reliable addition to your rotation.
Yes. Sig designed the P229 around these two calibers from the start, and the magazines are totally interchangeable between them. The same 12-round magazine feeds either cartridge perfectly, so you can switch calibers or ammunition types without changing magazines.
It depends on when your P229 was made. The .40 S&W and .357 SIG P229 magazine well has been consistent across all production runs, so the double-tapered magazine geometry hasn't changed. All P229 .40 and .357 magazines interchange with any vintage of .40 or .357 P229.
This is the genuine factory magazine for the P229. It's the same product Sig Sauer ships with new pistols, though the company sources the magazine bodies from multiple manufacturers and finishes them to identical specifications for consistent performance.
The 12-round is Sig Sauer's standard capacity for the P229 in .40 and .357 SIG. The 10-round version exists for compliance in certain regions, but in most areas, the 12-round capacity is the factory standard for this platform.
| UPC | 798681257843 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAG-229-43-12 |
| Brand Fit | Sig Sauer |
| Caliber/Gauge | .40 S&W |
| Capacity | 12 |
| Color | Black Phosphate |
| Length | 10 |
| Model | |
| Model Fit | P229 |
| Package Height | 1.8 |
| Package Width | 4.1 |
| Product Type | Accessory-Magazines |
| Quantity | 1 |
| Shipping Weight | 0.35000000000000003 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Style | Detachable |
| Units per Box | 1 |
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