Introduction
The Ruger SFAR (Small-Frame Autoloading Rifle) has caught the attention of many firearm enthusiasts for its compact size and .308-caliber firepower. Ruger’s engineering feat was to pack the punch of a larger caliber into an AR-15-sized platform. And while this hybrid rifle delivers outstanding performance for many users, it’s not immune to issues. Like any new platform, the SFAR has its quirks.
In this article, we’ll walk through the 5 most common Ruger SFAR problems owners report—and, more importantly, how to fix them. Whether you’re a first-time owner or considering a purchase, this guide can help you troubleshoot problems and keep your rifle running reliably.
Top 5 Ruger SFAR Problems & Solutions
1. Extractor Problems & Its Solutions
The Problem:
Many Ruger SFAR users have reported extraction issues, especially during the break-in period. The extractor either fails to remove spent casings or only partially pulls them out, leading to stovepipes or double feeds.
Why It Happens:
The SFAR’s tight tolerances and the high pressure of .308 rounds can stress the extractor assembly. Additionally, carbon buildup and insufficient lubrication can worsen the issue over time.
How to Fix It:
- Clean the extractor thoroughly. Carbon fouling is a leading cause of poor extraction.
- Inspect the extractor spring and O-ring. If worn or damaged, replace them with a higher-quality aftermarket upgrade.
- Polish the extractor claw using fine-grit sandpaper to smooth any rough edges.
- Use quality ammo. Cheap, steel-cased rounds can worsen extractor wear.
- Break-in properly. Run 100–200 rounds of brass-cased, full-powered ammo to allow parts to settle in.
If extraction issues persist even after these fixes, consider contacting Ruger for a warranty evaluation.
2. Failure To Fire & Its Solutions
The Problem:
Some users experience a failure to fire where the primer is struck but the round does not ignite, or no primer strike happens at all.
Why It Happens:
Common culprits include light primer strikes, a dirty firing pin channel, or even faulty ammunition.
How to Fix It:
- Clean the bolt carrier group and firing pin thoroughly. Carbon buildup in the firing pin channel can restrict movement.
- Inspect the firing pin for wear or deformation.
- Check your ammo. Some primers, especially in surplus or steel-cased ammo, are harder than others and may require stronger strikes.
- Upgrade the hammer spring. If light strikes persist, a stronger hammer spring can deliver more force.
- Ensure proper bolt lock-up. Incomplete lock-up may prevent the firing pin from reaching the primer.
Routine cleaning and using high-quality ammo go a long way in avoiding this frustrating issue.
3. Cycling Problem & Its Solutions
The Problem:
Cycling issues are fairly common in gas-operated rifles, and the SFAR is no exception. You may notice the bolt failing to fully cycle, short-stroking, or not locking back on the last round.
Why It Happens:
This is often a gas system issue. The SFAR features an adjustable gas block, and incorrect settings can lead to under- or over-gassing.
How to Fix It:
- Adjust the gas block. Start with the factory setting, then tweak as needed depending on ammo and suppressor use.
- Ensure the gas block and tube are correctly aligned. Misalignment can cause gas loss.
- Clean the gas system. Carbon buildup can restrict gas flow.
- Use the right buffer and spring combo. Too heavy a buffer can slow down the bolt, especially when under-gassed.
- Try different ammunition. Heavier loads may cycle better, especially in a new rifle.
Dialing in the gas system and keeping it clean are key to resolving most cycling issues.
4. Jamming Issue & Its Solutions
The Problem:
Jams can range from failure to eject, double feeds, to spent casings getting stuck in the chamber. For many SFAR users, this is one of the most disruptive problems.
Why It Happens:
Jamming is often a symptom of another underlying issue—magazine malfunction, poor ammo, or gas system imbalance.
How to Fix It:
- Clean the chamber thoroughly. Use a chamber brush to ensure carbon or brass shavings aren’t creating friction.
- Inspect and swap out magazines. Mag-related jams are more common than you’d think—stick with Magpul, Lancer, or other quality brands.
- Use high-quality brass ammo. Steel cases and reloads can stick or deform, increasing the chance of jams.
- Polish the feed ramps to ensure smooth cycling.
- Check extractor tension. A weak extractor won’t grip spent casings properly, leading to stove-pipes or double feeds.
A systematic approach—ammo, mags, cleaning—usually resolves jamming problems fairly quickly.
5. Feeding Problem & Its Solutions
The Problem:
Failure to feed (FTF) happens when the rifle doesn’t load the next round into the chamber. Either the bolt doesn’t pick up a round, or it jams halfway in.
Why It Happens:
Feeding issues can be caused by rough feed ramps, weak magazine springs, or inconsistent bolt speed due to gas tuning.
How to Fix It:
- Inspect and clean feed ramps. Rough or dirty ramps can delay or deflect rounds.
- Polish the ramps carefully with a Dremel and polishing compound (only if you’re experienced—don’t overdo it).
- Swap out magazines. Try a fresh mag with strong springs to see if that improves feeding.
- Tune the gas system. If the bolt isn’t moving fast enough, it may not fully strip and chamber the next round.
- Lubricate the bolt carrier group. A dry BCG can cause sluggish movement.
Feeding reliability often comes down to a combination of ammo, mags, and gas efficiency—each one deserves a closer look.
FAQs – Ruger SFAR Problems
Q1: Is the Ruger SFAR reliable after break-in?
Yes, many owners report that after 200–300 rounds and proper tuning, the rifle becomes significantly more reliable.
Q2: Can I use steel-cased ammo in the SFAR?
You can, but it’s not recommended. Steel cases increase extractor wear and can contribute to jamming.
Q3: What’s the ideal break-in process?
Use quality brass ammo, clean thoroughly after every 50 rounds, and avoid suppressors until the gas system is dialed in.
Q4: Does suppressor use affect performance?
Yes. Suppressors can over-gas the system. Adjust the gas block accordingly and monitor bolt speed.
Q5: Should I upgrade any parts right away?
Not necessarily. Start stock, learn how the rifle behaves, then consider upgrades like a better trigger, buffer system, or enhanced extractor if needed.
Conclusion
The Ruger SFAR is an impressive rifle that bridges the gap between AR-15 portability and AR-10 firepower. However, it does come with a few growing pains—especially during the initial break-in period. By understanding the five most common Ruger SFAR problems and applying the right fixes, you can significantly enhance reliability and performance.
Whether you’re chasing tighter groups or smoother cycling, regular maintenance and a few smart upgrades can go a long way. With a bit of patience and tuning, the SFAR becomes a rock-solid performer that punches well above its weight class.