Upgrading the SIG MPX k | Radian, Lantac, Rattler & much more | #PimpMyGun

Published on September 1, 2020
Duration: 9:10

This video details a comprehensive custom build of the SIG MPX K, focusing on ergonomic and performance upgrades. Key modifications include replacing the factory charging handle with a Radian Raptor, upgrading the trigger to a CMC drop-in, and swapping the barrel for a shorter 4.5-inch version with a Lantac Dragon muzzle brake. The build also incorporates a Midwest Industries M-LOK handguard, a SIG Rattler grip, and an F5 Manufacturing 50-round drum magazine, culminating in a highly personalized and functional PCC.

Quick Summary

The SIG MPX K was upgraded with a Radian Raptor charging handle for better ergonomics, a CMC drop-in trigger for improved feel, and a shorter 4.5-inch barrel with a Lantac Dragon muzzle brake. A Midwest Industries M-LOK handguard and an F5 drum magazine were also added.

Chapters

  1. 00:00Introduction: SIG MPX K Pimp My Gun Project
  2. 00:43Upgrade 1: Radian Raptor Charging Handle
  3. 01:25Parts Overview: Mags, Sights, Optic
  4. 02:01Trigger & Barrel Swap: CMC & Lantac Dragon
  5. 02:58Handguard & Accessories: Midwest Industries, F5 Drum
  6. 03:34Disassembly & Grip/Stock Installation
  7. 04:36Barrel & Handguard Installation Process
  8. 05:35CMC Trigger Install & Reassembly
  9. 06:58Final Assembly: Stock & Aimpoint Optic
  10. 08:46Conclusion: Final Build Showcase & Review

Frequently Asked Questions

What are the key upgrades performed on the SIG MPX K in this video?

The SIG MPX K received upgrades including a Radian Raptor charging handle, a CMC drop-in trigger, a shorter 4.5-inch barrel with a Lantac Dragon muzzle brake, a Midwest Industries M-LOK handguard, a SIG Rattler grip, and an F5 Manufacturing 50-round drum magazine.

Why is the Radian Raptor charging handle recommended over the factory one?

The Radian Raptor charging handle is recommended because the factory handle is considered too narrow and difficult to operate, especially when clearing the stock. The Raptor offers significantly better ergonomics and ease of use.

What trigger was installed, and what are the considerations?

A CMC drop-in trigger was installed for improved performance. While positive experiences are noted, the speaker mentions potential warranty concerns when using non-OEM triggers on firearms.

What barrel length and muzzle device were used in the custom build?

The build features a shorter 4.5-inch barrel, replacing the original 8-inch one. A Lantac Dragon muzzle brake was added to the barrel, highlighting the MPX's proprietary muzzle threads.

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