$46.99
31 in stock
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Sig engineered this 20-round magazine specifically for the MPX platform after a two-year design project focused on meeting their quality standards while delivering superior performance. The result is a magazine that combines metal feed-lips with a robust yet lightweight polymer body, giving you the durability you need without unnecessary weight. The design works seamlessly with all generations of the MPX, making it a genuine drop-in replacement whether you're using a pistol or rifle configuration.
Sig built this magazine to avoid the common pitfalls of other PCC magazines. While some designs rely on polymer feed-lips that can warp over time and cause feeding issues, this magazine uses hardened steel feed-lips backed by proven polymer construction. The magazine has gone through real-world testing by MPX owners and consistently delivers clean feeding and reliable function across a range of ammunition types, from standard velocity rounds to subsonic loads.
Since the MPX uses a proprietary magazine design rather than relying on handgun mags, quality matters. This 20-round capacity keeps your rifle balanced and nimble for tactical work, training, or range time without the bulk of higher-capacity options. The compact size paired with the factory-engineered design means consistent performance every time you load up.
The 4.8-star rating across hundreds of verified purchases reflects what owners experience in the field. Users consistently report zero feed failures, smooth loading, and magazines that hold their shape season after season. This is the magazine SIG Sauer recommends for the platform, backed by their Infinite Guarantee with no receipts or warranty cards required.
Yes, Sig designed this magazine for compatibility across all generations of the MPX platform. Whether you own an earlier generation, Gen 2, or newer K models, this 20-round magazine drops right in and feeds reliably. It's the official factory replacement from Sig Sauer.
Polymer feed-lips can warp or deform under stress or over time, potentially causing feeding issues down the line. This magazine uses hardened steel feed-lips, which won't warp and deliver consistent feeding performance across any ammunition type you run through it, from standard rounds to subsonic loads.
The polymer body is designed to hold its shape and maintain durability through hard use. Customers report these magazines performing flawlessly through thousands of rounds and standing up to the wear and tear of training and competition. The combination of quality polymer with steel feed-lips gives you the best of both worlds.
Absolutely. This magazine works with MPX pistols and rifles alike. The MPX platform uses the same magazine regardless of configuration, so you can use the same 20-round mag in any MPX variant you own.
| UPC | 798681661497 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 8900828 |
| Caliber/Gauge | 9mm |
| Capacity | 20 |
| Color | Black |
| Length | 10.5 |
| Model | |
| Package Height | 1.2 |
| Package Width | 3.9 |
| Product Type | Accessory-Magazines |
| Quantity | 1 |
| Shipping Weight | 0.25 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| Units per Box | 1 |
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