Ultralight +9 Base Pad

Ultralight +9 Base Pad for the new Sig Sauer MPX 35-round “THRiL” 9mm magazines

Designed for Sig Sauer’s *NEW* 35-round “THRiL” 9mm magazines

NOT compatible with Sig Sauer’s 30-round “Lancer” 9mm magazine

Total weight: 73.7 g.

Length: 4.9 cm.

Height: 5.1 cm.

No spring required; designed for use with the OEM spring

Patented, proven push-pin design.

No tools required—simply push the pin down, slide the base pad onto the magazine, and push the pin up to lock the base pad onto the magazine. Easy to attach to and detach from the magazine.

No special tools, additional devices, or springs required for assembly/disassembly—simply pull off the base pad, remove the insert at the bottom of the spring, and attach the extension.

One-piece design; no small parts to keep track of.

Minimal length increase for use in the prone position.

Holds 44+1 rounds in 9mm.

The added weight allows the magazine to eject more easily for faster reloads.

CNC-machined from billet aluminum.

Hard-anodized.

Made in the USA.

Designed for Sig Sauer’s NEW 35-round 9mm magazine.

The improved SIG SAUER MPX factory magazine with 35 rounds is a significant upgrade over previous factory magazines. In addition to 5 extra rounds, these new magazines offer increased reliability and durability in a lightweight polymer body. 35 rounds just aren’t enough. Those are beginner numbers, and we’re here to help you push those numbers higher! How does an extra 9 rounds sound to you? We’re pretty happy with 44 rounds, and we know you will be, too. Thanks to our patented, proven push-pin design, no tools are required for field cleaning. The one-piece design of the base pad adds just enough weight (73.7 g) to allow empty magazines to drop out freely and cleanly. The shape of our base pad is designed to save weight and facilitate fast, smooth reloading. Machined from billet aluminum and hard-anodized, we take all your concerns about durability and longevity off your hands. All machining and manufacturing steps are performed in the U.S.