The Ruger AR-556, while a popular and generally reliable platform, isn't immune to the occasional issue. This comprehensive guide dives into some of the most frequently reported problems with the Ruger AR-556, providing potential causes and troubleshooting solutions. Remember, safety should always be your top priority when handling firearms. If you're uncomfortable performing any maintenance or repair, consult a qualified gunsmith.
Feeding and Ejection Problems
One of the most common complaints among Ruger AR-556 owners revolves around feeding and ejection issues. These can manifest in several ways:
Failure to Feed
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Cause: This often stems from issues with the magazine, the bolt carrier group (BCG), or the ammunition itself. Bent feed lips on the magazine, a dirty or damaged BCG, or ammunition that's not properly lubricated can all contribute. Improperly seated magazines are also a frequent culprit.
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Troubleshooting: Inspect the magazine for damage, clean and lubricate the BCG thoroughly, and ensure you're using quality ammunition. Double-check that the magazine is fully seated in the lower receiver. Consider trying different magazines to rule out magazine-specific problems.
Failure to Eject
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Cause: Failure to eject spent casings usually points to issues with gas pressure, the extractor, or the ejector. Insufficient gas pressure might be due to a dirty gas tube or improper gas block adjustment. A damaged extractor or ejector is another frequent cause.
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Troubleshooting: Clean the gas tube and ensure the gas block is properly aligned and adjusted. Inspect the extractor and ejector for damage or wear. Replacement parts might be necessary if damage is found.
Gas System Issues
The AR-556's direct impingement gas system can sometimes be a source of problems:
Excessive Gas
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Cause: Over-gassed systems can lead to forceful ejection, potentially causing damage to the rifle or the shooter. This can be due to a variety of factors, including excessive gas port diameter, a malfunctioning gas regulator, or a build-up of carbon in the gas system.
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Troubleshooting: Cleaning the gas system thoroughly is the first step. If the problem persists, it might require a gas system adjustment (if adjustable) or the attention of a gunsmith.
Short Stroking
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Cause: Insufficient gas pressure can lead to the bolt carrier group not fully cycling, resulting in short stroking. This is usually caused by a dirty gas tube, a problem with the gas block, or the use of underpowered ammunition.
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Troubleshooting: Cleaning the gas tube and inspecting the gas block for proper alignment are crucial. Ensure you're using appropriate ammunition for your system.
Accuracy Issues
While the Ruger AR-556 generally boasts acceptable accuracy, some users report issues:
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Cause: Inaccurate shooting can stem from several sources: poor ammunition, improper sighting, a dirty barrel, or a poorly maintained rifle.
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Troubleshooting: Start by ensuring you're using high-quality ammunition and that your rifle is properly zeroed. Clean the barrel thoroughly and check for any signs of damage.
Other Potential Problems
- Loose Handguards: Check the screws frequently and tighten as needed.
- Receiver issues: Always look for any cracks or stress marks on the upper and lower receivers.
- Bolt carrier group wear: Regular cleaning and lubrication are crucial for a long service life.
Disclaimer: This information is for educational purposes only and should not be considered professional gunsmithing advice. Always handle firearms responsibly and safely. If you are experiencing persistent issues with your Ruger AR-556, consult a qualified gunsmith.
