SIG MPX magazines are designed with different types of unique features, such as:

• Durable Construction: SIG MPX magazines are made with Lightweight polymer for exceptional corrosion and shock resistance.
• Capacity Options: Available in various capacities, from 10 to 50 rounds. Ideal for different situations.
• Lightweight Design: SIG MPX mags are lightweight because of their polymer material contributing to better handling and mobility.
• Compatibility: These mags are specially designed for the SIG Sauer MPX platform but are compatible with other firearms with adapters.
• Feed-lips: Mags feature metal feed-lips for enhanced durability and a robust yet lightweight polymer body for shape retention.
• Ease of Maintenance: Easy to disassemble for cleaning and maintenance.

There are different types of MXP mags by material & size. Here is the breakdown;

By Material:

• Polymer: Lightweight & durable magazines made with high-strength polymer. Impact-resistant and ideal for harsh conditions.
• Steel: Steel-lined polymer combines the best of metal and polymer designs. Featuring steel feed-lips for reliable feeding and a durable polymer body.

By Size:

• Compact Size: Mags with approximately 4.5–5 inches, designed to hold 10 rounds. Ideal for capacity-restricted regions.
• Standard Size: These mags have a round 8.5 inches height & hold around 30 rounds.
• Extended Mags: Comes with 10+ inches to hold 40+ Rounds.
• Drum Mags: Bulkier with a circular drum base, holding significantly 50+ rounds.

Some most popular brands that provide the best quality MPX magazines are;

Sig Saur

Sig Sauer is the original manufacturer of the MPX platform magazines. The SIG SAUER MPX Magazine met all of the SIG quality and reliability standards while providing even higher capacity in the MPX platform.

• High-strength polymer.
• Durable and lightweight, delivering optimal performance in various conditions.
• Reinforced feed lips
• Translucent option for easy ammo count.

ProMag

ProMag manufactures high-quality aftermarket magazines for MPX magazines. Their Sig MPX 9mm 50-Round Drum Magazine is very popular & ensures reliable and smooth feeding in high-stress target or defensive situations.

• DuPont Zytel polymer magazine body construction
• High-capacity options with capacities of up to 50 rounds.
• Decent Reliability: Functional for casual shooting but may lack OEM-level precision.

Thril

Thril MPX aftermarket magazines are engineered to deliver factory-like feeding performance and unwavering reliability in any target-rich environment.The Thril PMX SM9 Gen 2 magazine is the superior replacement mag for the Sig Sauer MPX.

• Lightweight polymer body
• Enhanced internal stacking geometry
• Reinforced stainless steel feed lips

Sig MPX mags are specially designed for SIG Saur MPX series firearms. But there are some other firearms that are compatible with these magazines with minor modifications.

SIG Sauer MPX Series Firearms

• SIG MPX Standard: The original firearms manufactured for these magazines.
• SIG MPX K
• SIG MPX Copperhead
• SIG MPX PCC

Other Firearms

• Custom-Built AR-9 Platforms: Some AR-9 firearms accept SIG MPX magazines.
• B&T APC9 Pro: These 9mm firearms can be compatible with MPX magazines by using specific lower receiver adapters.

MPX magazines are commonly chambered for 9mm ammunition.

Ensure smooth operation during rapid-fire and high-stress situations.

The special features of these mags ensures the rounds cycle properly through the chamber without misfeeds or jams.

The mags are available in different rounds capacity from 10 to 50 rounds drum mags.

MPX magazines are designed with various round capacities from low to high for shooters' specific needs.

• Low Capacity Magazines( 10 Rounds): The SIG SAUER factory MPX 10 rounds low capacity mags are specially designed to work with Generation II MPX or Key Mod models.
• Standard Capacity Mags ( 35 Rounds): The standard 35 rounds capacity mags are helpful to save your reloading time at the range.
• Extended Magazine Capacity ( 40 Rounds): Designed to hold 40 rounds, these extended mags are an ideal choice for the users who want more ammo in the field.
• High Magazine capacity / Drum magazines ( 50+ rounds): Ideals choice for high-volume shooting, competitions, and tactical use.

Cost Range: Starting from $45.99

Average Rating With Seller: 13 Reviews

Why It's Best To Buy:

• Lightweight & durable polymer body provides exceptional corrosion and shock resistance.
• High visibility polymer follower to check ammo
• Smooth and reliable feeding in high-stress target environments and defensive situations.

Limitations:

• A 35-round magazine may be restricted by state laws limiting magazine capacity.

Cost Range: Starting from $54.99

Average Rating With Seller: 34 Reviews

Why It's Best To Buy:

• Lightweight polymer construction provides unparalleled strength and lasting corrosion resistance.
• Its reinforced feed lips combined with a steel wire spring and durable polymer follower provide reliable feeding in defensive situations.
• Its compact design is extremely maneuverable and ideal for target shooting.

Limitations:

• Less commonly stocked than standard 30 or 35-round magazines.