Which PCC is the Least Worst?

Published on May 8, 2021
Duration: 6:51

This review compares the Sig MPX and PTR 9CT (MP5 clone) as top-tier Pistol Caliber Carbines (PCCs). The MPX excels in ergonomics, modularity, and a faster recoil impulse due to its short-stroke gas piston and inline stock. The PTR 9CT, with its roller-delayed system, offers slightly better accuracy at 50 yards but lags in modern controls and accessory mounting.

Quick Summary

The Sig MPX and PTR 9CT are top-tier PCCs due to their advanced operating systems (gas piston and roller-delayed blowback). The MPX excels in ergonomics and modularity with AR-style controls and M-LOK, while the PTR 9CT offers slightly better accuracy but lags in modern features.

Chapters

  1. 00:00Intro: Sig MPX vs PTR 9CT PCC Comparison
  2. 01:31Part 1: Recoil Impulse - MPX vs MP5 System
  3. 03:03Part 2: Ergonomics & Reloads - MPX vs MP5
  4. 05:12Part 3: Accuracy Testing at 50 Yards
  5. 05:50Part 4: Modularity & Accessories

Frequently Asked Questions

What makes the Sig MPX and PTR 9CT stand out among Pistol Caliber Carbines (PCCs)?

Both the Sig MPX and PTR 9CT are considered top-tier PCCs because they utilize more advanced operating systems than typical straight blowback designs. The MPX uses a short-stroke gas piston, and the PTR 9CT employs a roller-delayed blowback system, contributing to smoother operation and better handling.

How do the recoil impulse and ergonomics compare between the Sig MPX and PTR 9CT?

The MPX offers a sharper, faster recoil impulse and reduced muzzle rise due to its inline stock and gas piston system, aiding follow-up shots. Its AR-style controls, including last-round bolt hold open, make reloads faster and more intuitive than the MP5-style PTR 9CT.

Which PCC, the Sig MPX or PTR 9CT, is more accurate?

In testing at 50 yards with 115gr Blazer Brass, the PTR 9CT produced the best groups. The Sig MPX performed slightly worse, with potential factors including trigger preference or barrel wear influencing the results.

Is the Sig MPX or PTR 9CT easier to accessorize?

The Sig MPX is significantly easier to accessorize due to its M-LOK handguard and lack of a cocking tube, which often complicates accessory mounting on MP5-style platforms like the PTR 9CT. This makes adding lights and other accessories more straightforward on the MPX.

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