SHORT BARREL SHOWDOWN ft. Reno May

Published on October 23, 2020
Duration: 20:15

This video features Reno May and the GunThots crew conducting a "Short Barrel Showdown" to evaluate several AR-15 short-barreled uppers. They focus on gas port sizing, recoil, and accuracy, offering expert insights into optimizing performance. The Geissele 11.5 Super Duty emerged as the top performer due to its superior gas tuning and accuracy.

Quick Summary

The Geissele 11.5 Super Duty emerged as the top performer in a short-barreled AR-15 upper evaluation, achieving 0.57 MOA accuracy and offering excellent shootability due to its superior gas system tuning. Other uppers were criticized for overgassing issues, leading to harsh recoil and reduced performance, particularly when suppressed.

Chapters

  1. 01:19Introduction to Short Barrel Showdown
  2. 02:25The Issue of Overgassing
  3. 05:38Aero Precision 11.5 Review
  4. 06:30Rosco 11.5 Sauce Pack Review
  5. 07:27Geissele 11.5 Super Duty Review
  6. 08:07SOLGW 12.5 EX02 Review
  7. 09:25MK18 Mod GunThot Review
  8. 13:01Reliability vs. Performance Debate

Frequently Asked Questions

What is the main issue with overgassed AR-15 uppers?

Overgassed AR-15 uppers often use oversized gas ports, leading to excessive recoil, faster parts wear, and a less pleasant shooting experience, especially when suppressed. This is often done to ensure reliability with weaker ammunition but compromises overall performance.

Which short-barreled AR-15 upper performed best in the GunThots evaluation?

The Geissele 11.5 Super Duty was rated the top performer, achieving excellent sub-MOA accuracy (0.57 MOA) and offering smooth, manageable recoil due to its superior gas system tuning.

How does gas port size affect AR-15 performance?

Gas port size is critical for AR-15 function. An improperly sized port (too large) can cause overgassing, leading to harsh recoil and increased wear. A properly tuned port ensures reliable cycling without excessive force, improving shootability and longevity.

What is the significance of the 'Crane spec' gas port mentioned for the MK18 build?

The 'Crane spec' gas port (0.070 inches for a 10.3-inch barrel) represents a military-derived standard for optimal gas system tuning on short-barreled AR-15s. It balances reliability with manageable recoil and suppressed performance.

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