Why AR10's suck - Ruger SFAR vs. DPMS GII - the original vs. the newcomer.

Published on January 17, 2023
Duration: 23:42

This review compares the Ruger SFAR and DPMS GII, highlighting the lack of standardization in AR-10 platforms and the proprietary nature of 'small frame' .308 rifles. It details internal component differences, the evolution of compact .308 AR designs, and range testing results. The SFAR requires specific gas settings for break-in and shows sub-MOA accuracy with lighter bullets, while heavier loads perform less consistently.

Quick Summary

The AR-10 platform, particularly 'small frame' variants, suffers from a lack of standardization, leading to proprietary components. The Ruger SFAR and DPMS GII aim for AR-15-like dimensions. The SFAR requires higher gas settings for break-in and performs best with lighter .308 bullets for sub-MOA accuracy.

Chapters

  1. 00:00Intro: AR10 Standardization Issues
  2. 01:42Internal Component Comparison (Springs, BCGs)
  3. 05:07Evolution of Compact .308 ARs
  4. 07:23Ruger SFAR Range Testing & Gas Block
  5. 09:33Receiver & BCG Differences Explained
  6. 15:33Troubleshooting a New SFAR: Gas Settings
  7. 18:40SFAR Accuracy Testing Results

Frequently Asked Questions

What are the main issues with the AR-10 platform compared to the AR-15?

The AR-10 platform, especially 'small frame' variants, lacks standardization. This means components like recoil springs, buffers, and bolt carrier groups are often proprietary to specific manufacturers, unlike the highly interchangeable parts found in the AR-15/M4 ecosystem.

How does the Ruger SFAR perform in terms of accuracy?

The Ruger SFAR shows good accuracy with lighter bullet weights (130gr-147gr), achieving sub-MOA groups at 100 yards. However, heavier match loads (168gr-175gr) resulted in larger groups, around 1.4-1.5 inches.

What is the purpose of 'small frame' .308 AR designs like the Ruger SFAR?

The primary goal of 'small frame' .308 AR designs, such as the DPMS GII, POF Revolution, and Ruger SFAR, is to reduce the overall weight and dimensions to be comparable to that of a standard 5.56x45mm AR-15 rifle.

How should a new Ruger SFAR be initially operated for reliability?

For initial break-in, it's recommended to use the highest gas setting (setting 3) on the Ruger SFAR, as per the manual. This helps ensure proper cycling and resolves potential short-stroking issues reported by some users.

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