New THRiL Magazines for Your SIG MPX PCC

The SIG MPX Pistol Caliber Carbine has a new magazine supplier. SIG has contracted THRiL to manufacture their OEM MPX magazines, replacing Lancer in that role. THRiL currently supplies 20 and 35 round magazines under the SIG brand as well as the THRiL brand Gen 2 SM9 magazines for the MPX.

THRiL magazines for the SIG MPX PCC
The new THRiL SM9 MPX mags come in black, gray, and flat dark earth. (

THRiL is an American company founded in 2017 on the principles of “Tactical, Hunting, Recreation, Loyalty,” hence the acronym name. They produce the SM9, as well as AR-15 magazines, grips, stocks, and trigger guards. All THRiL products are developed, tested, and made in the United States.

THRiL 35 round magazines for SIG MPX PCC
The 35 round SIG branded THRiL mag for the MPX PCC. (

THRiL MPX Magazine Features

The THRiL SM9 magazine for the SIG MPX has the following specs and features:

  • Capacity: 20 or 35 Rounds
  • Caliber: 9mm Luger
  • Enhanced Stack Geometry
  • Stainless-Steel Reinforced Feed Lips
  • Superior Ergonomics with Laser Textured Grip Panels
  • Elastomeric Strike Plate for Greater Durability
  • Stability Rib on the Rear Spine
  • An Improved Anti-Tilt Follower Design with a Continuous Curvature Core
  • A New Spring Redesigned for More Linear Forces
THRiL SM9 35 round MPX mag specs
Basic specs of the THRiL SM9 35 round mag for the SIG MPX. (

The SIG MPX Pistol Caliber Carbine

The SIG MPX is a short-stroke gas-operated PCC that fires from a closed rotating bolt. The MPX is available in carbine and sub-gun configurations. Many folks hail the MPX as the Heckler & Koch MP5’s equal. Others say the MPX is even better. Time will tell.

SIG MPX Pistol Caliber Carbine
The SIG MPX Pistol Caliber Carbine is said to be as good as the HK MP5. It comes in carbine and sub gun configurations. (

From Lancers to THRiLs

Lancer originally provided the branded SIG MPX magazines. The Lancer mags are good quality, but they are quite expensive at 60 to 70 bucks apiece. That cost may be why SIG made the change. The THRiL mags aren’t cheap, but they do cost significantly less than the Lancers. The 35 rounders are $49.99 from SIG. The non-SIG-branded versions will run you $39.99.

stainless-steel reinforced feed lips
The new THRiL mags have stainless-steel reinforced feed lips for added durability. (

THRiL Gives Back

THRiL touts their support for veterans, law enforcement, and first responders. They offer a discount program for those folks and a portion of the company’s profits goes to charities and foundations supporting those communities. THRiL also gives to ensure the longevity of tactical shooting, hunting, and outdoor recreation.

THRiL 20 round magazine for the SIG MPX PCC
The 20 round SIG branded THRiL mag for the MPX PCC. (

Continued Quality

The new THRil SM9 mags for the MPX continue the Lancer magazines’ reliability. Your MPX will run like it’s supposed to and the mags themselves will last. So, if you have an MPX, don’t let the change alarm you. You can still get high quality mags and now they won’t cost as much. And it just so happens that Gunmag Warehouse carries the new THRiL mags.

William "Bucky" Lawson is a self-described "typical Appalachian-American gun enthusiast". He is a military historian specializing in World War II and has written a few things, as he says, "here and there". A featured contributor for Strategy & Tactics, he likes dogs, range time, and a good cigar - preferably with an Old Fashioned that has an extra orange slice.


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