Sig Rattler 300BLK - Everything you wanted to know and more.

Published on August 13, 2018
Duration: 53:34

This guide details the field stripping and basic maintenance of the Sig Sauer MCX Rattler, as demonstrated by a recognized firearms expert. It covers the process of disassembling the upper and lower receivers, removing the bolt carrier group and recoil spring, and inspecting components. The expert emphasizes the importance of safety checks throughout the process.

Quick Summary

The Sig Sauer MCX Rattler in .300 Blackout, tested with a 5.5-inch barrel, achieved 1806 fps and 905 ft-lbs with supersonic ammo. Subsonic rounds produced 828 fps and 304 ft-lbs. Key drawbacks include a high MSRP ($2,300) and significant gas blowback when suppressed.

Chapters

  1. 00:10Introduction to the Sig Rattler
  2. 01:10Configuration and Accessories
  3. 05:48Supersonic Ballistics Testing
  4. 08:47Subsonic Ballistics and Comparisons
  5. 17:25Suppression and Gas Blowback
  6. 35:51Internals and Disassembly
  7. 38:20Final Verdict and Pricing

Frequently Asked Questions

What is the muzzle velocity and energy of the Sig Rattler with supersonic .300 Blackout ammo?

The Sig Rattler, with its 5.5-inch barrel, achieved an average muzzle velocity of 1806 fps and generated approximately 905 ft-lbs of energy using Fiocchi 125gr supersonic .300 Blackout ammunition, demonstrating impressive performance for its size.

How does the Sig Rattler perform with subsonic .300 Blackout ammunition?

Testing with Sellier & Bellot 200gr subsonic .300 Blackout rounds yielded a muzzle velocity of 828 fps and 304 ft-lbs of energy. While offering good ballistic coefficients for distance, this is less raw energy than 9mm from similar short barrels.

What are the main drawbacks of the Sig Rattler, according to the expert?

The expert notes the high MSRP of around $2,300 and significant gas blowback when the firearm is suppressed as key considerations for potential civilian buyers, impacting comfort during extended firing sessions.

What accessories were featured on the Sig Rattler in the review?

The Sig Rattler was configured as a pistol with an SB Tactical side-folding brace, a Trijicon MRO red dot sight mounted on a Midwest Industries mount, and a Sig 762 QD suppressor.

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