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If you own a Sig MPX Gen II and have ever winced at what factory magazines cost, the Thril PMX SM9 is worth a serious look. It's a 35-round 9mm mag that drops right into the MPX Gen II and compatible KM models, and it's built by the same folks who supply mags to some big names in the industry. Word around the range is these run identical to the pricier factory option, right down to fit and function, which is exactly what you want in a spare mag.
The body is made from Thril's polymer-matrix (PMX) material, which shrugs off impact and holds its shape even when you're loading it up and running it hard. The stainless steel feed lips are the real workhorse here. Steel resists deformation over thousands of cycles, so cartridges stay lined up and feed the way they should long after a plain polymer lip might start to spread. There's also a reworked follower and a stability rib running down the rear spine that keeps the mag seated without wobble and helps it cycle consistently across a range of loads.
Grip texture and finger grooves along the body give you a solid hold during fast reloads, wet hands or gloved. Folks who've put real round counts through these report smooth, jam-free feeding through hundreds and even thousands of rounds with no hiccups, and it plays nice with speed loaders like the Maglula if you hate thumb fatigue. The baseplate pops off easily for cleaning, so keeping the spring and follower clear of range grit is no chore.
At 35 rounds, this mag means more trigger time and fewer reloads, whether you're running drills, plinking, or just filling out your range bag. Grab a couple of spares and you'll always have a fresh one ready to go.
Yes, this magazine is built specifically for the Sig Sauer MPX Gen II and compatible KM models. It seats with a positive click and locks in without wobble thanks to the stability rib on the rear spine. Double-check your MPX generation before ordering, since Thril offers versions matched to different platforms.
Owners consistently report that the Thril PMX SM9 runs the same as the factory option at a lower price, with some noting they're nearly identical in fit and function. It uses stainless steel feed lips and a durable polymer-matrix body just like premium mags. Many buyers say the baseplate design is a nice touch and grab several as spares.
By most accounts, yes. Users have run hundreds to several thousand rounds through these with no feeding issues, double feeds, or malfunctions. The stainless steel feed lips resist spreading over time, which is a big part of why they hold up under heavy use.
It's rated for 35 rounds, though some shooters like to keep a couple rounds shy to ease spring tension over long-term storage, which is a personal preference. It also works well with loading tools like the Maglula, so topping off is quick and easy on your thumbs. The baseplate comes off simply for cleaning when needed.
| UPC | 856489008019 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | PMXSM935BLK |
| Brand Fit | Sig Sauer |
| Caliber/Gauge | 9mm |
| Capacity | 35 |
| Model | |
| Model Fit | MPX Gen II |
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