Shooting the SIG MCX Rattler 300blk SBR

Published on May 30, 2020
Duration: 7:58

This comprehensive review details the customization and performance of the SIG MCX Rattler SBR in .300 Blackout. The video highlights the installation of high-end aftermarket parts like the Geissele Super Charging Handle and Phase 5 Tactical bolt release, alongside an Aimpoint Micro T1 optic on a KDG Sidelok mount. Expert insights are provided on magazine reliability, adjustable gas system tuning, and the quality of the SIG Matchlite Duo trigger, demonstrating a high level of technical expertise.

Quick Summary

The SIG MCX Rattler SBR in .300 Blackout is a highly customizable firearm. Recommended upgrades include a Geissele Super Charging Handle, Phase 5 Tactical Enhanced Bolt Release, and an Aimpoint Micro T1 optic on a KDG Sidelok mount. The adjustable gas system allows tuning for subsonic/supersonic ammo, and the SIG Matchlite Duo trigger offers excellent performance, potentially avoiding aftermarket replacement. NFA regulations apply due to its SBR status.

Chapters

  1. 00:00Introduction and Specs
  2. 00:18Aftermarket Upgrades
  3. 01:05Shooting and Optics
  4. 02:03Magazine Testing
  5. 04:23Controls and Ergonomics
  6. 05:50Gas System and Flash Hider
  7. 06:31Trigger Assessment
  8. 07:20Folded Shooting and Conclusion

Frequently Asked Questions

What are the key aftermarket upgrades recommended for the SIG MCX Rattler SBR?

The video recommends upgrading the charging handle to a Geissele Super Charging Handle and the bolt release to a Phase 5 Tactical Enhanced Bolt Release for improved ergonomics. An Aimpoint Micro T1 optic on a KDG Sidelok mount is also suggested for quick-detach capability.

How does the SIG MCX Rattler perform with different .300 Blackout ammunition types?

The Rattler is shown to reliably function with various .300 Blackout rounds, including both subsonic and supersonic loads. The adjustable gas system allows for tuning to optimize performance for each ammunition type.

Is the stock SIG MCX Rattler trigger considered good enough, or should it be upgraded?

The SIG Matchlite Duo trigger is praised for its short take-up and crisp break. The host suggests that this trigger may be sufficient for many users, potentially negating the need for an aftermarket trigger upgrade.

What are the NFA regulations concerning the SIG MCX Rattler SBR?

As a Short Barreled Rifle (SBR), the SIG MCX Rattler is regulated under the National Firearms Act (NFA). Legal possession requires compliance with federal laws, including registration and the payment of a $200 tax stamp.

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