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

Published on January 17, 2023
Duration: 23:42

This video provides an expert-level comparison between the Ruger SFAR and DPMS GII, focusing on the challenges and evolution of small-frame .308 AR platforms. The instructor, a recognized firearms expert, details internal component differences, troubleshooting steps for reliability, and accuracy testing results. The analysis highlights the proprietary nature of these rifles and offers practical insights for owners and potential buyers.

Quick Summary

The Ruger SFAR and DPMS GII represent distinct approaches to the 'small frame' .308 AR platform, aiming for AR-15-like ergonomics. The SFAR features a shorter receiver and BCG, while both platforms highlight the significant lack of component standardization compared to the AR-15. Troubleshooting the SFAR may involve adjusting its 4-position gas system, and accuracy is best with lighter bullets.

Chapters

  1. 00:00Introduction to Small Frame AR-10s
  2. 01:42Internal Component Comparison
  3. 05:07Evolution of the Platform
  4. 07:23Ruger SFAR Range Testing
  5. 09:33Receiver and BCG Differences
  6. 15:33Troubleshooting a New SFAR
  7. 18:40Accuracy Testing

Frequently Asked Questions

What are the main differences between the Ruger SFAR and DPMS GII?

The Ruger SFAR is a more recent 'small frame' .308 AR designed to mimic 5.56 rifle dimensions, featuring a shorter receiver and BCG. The DPMS GII was an earlier iteration. Both highlight the lack of standardization in AR-10 components compared to the AR-15 platform.

How do you troubleshoot reliability issues with the Ruger SFAR?

As demonstrated by the instructor, initial short-stroking on a new SFAR can often be resolved by adjusting the 4-position gas system to a higher setting, following the manual's guidance for the break-in period.

What kind of accuracy can be expected from the Ruger SFAR?

At 100 yards, the Ruger SFAR performs well with lighter bullets (130gr-147gr), achieving sub-MOA groups. Heavier match ammunition (168gr-175gr) tends to produce larger groups, around 1.4-1.5 inches.

Why is AR-10 component standardization a problem?

Unlike the AR-15, AR-10 variants, especially 'small frame' models like the SFAR and GII, use proprietary designs for parts like recoil springs, buffers, and bolt carrier groups, leading to compatibility issues between different manufacturers.

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