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🎖USAF Retired
4,543 Posts
Discussion Starter · #1 · (Edited)
I thought it would be nice if MPX owners had a place they could find aftermarket items.

SIG MPX Parts | SIG Sauer Products | Midwest Industries, Inc
MPX Handguards

Carbon Fiber:
SIG MPX® Carbon Handguard – Lancer Systems
Handguards — Isler Custom Gun Works (Caution: reported to take very long)

Sig MPX Trigger
- SLT-1 Sear Link Technology Trigger #1-50-11-001
9MM/PCC TRIGGER - Velocity Precision Engineering
Trigger Tech
Elftmann AR9 trigger

Charging handles:
NLA MPX Ambi Charge Handle and Lifter Block Kit | Next Level Armament

Magazine Release:
MPX-Extended Mag Release

Barrels, Gen 1 & 2; recoil springs; bolt rings, magwells and other parts and tools
Parts for MPX – In Lead We Trust

Muzzle brake
Dragon® Muzzle Brake 9mm SIG MPX | lantac-usa

Magwells, Baseplates, extractors, etc..
Parts and Accessories - Rifle - SIG MPX - Taran Tactical Innovations, LLC (I find the parts on GunBroker more often than on the company website)
MPX Mag Release

Magazine extensions:

Promag 50 Rnd drum magazine
Promag 30 rnd drum magazine

Recoil cushion
Recoil Cushion for SIG MPX

Pistol Stabilizing Braces Archives | SB Tactical

Bullet button (to help convert MPX to make it California legal)
Sig Sauer MPX & MCX / Lancer Patriot Mag Release

These are the websites I know of and use. Please feel free to add any others you folks might know of. I’ll add sites posted by others when and if I’m able.

🎖USAF Retired
4,543 Posts

17,945 Posts
I ordered some recoil springs from In Lead We Trust based on a recommendation from a member of this board and can't say enough good about them.

They immediately sent me a receipt and tracking number and when my springs were delivered, ILWT actually sent me an email stating that my springs were delivered and where and when.

Very impressive service and outstanding prices.
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