As we know, the AR-15 rifle has come into its own. Used in increasing numbers by target shooters, hunters, homeowners, and competitors (not to mention law enforcement agencies), the AR is here to stay and keeps seeing an increase in production. The most popular caliber is .223/5.56mm. The AR is the Modern Sporting Rifle — truly!
But… what if you want more than the .223? You know, like .308? After all, the original AR-15 wasn’t a “15” but technically a “10” — it was released in 7.62 NATO in the late ’50s by Eugene Stoner. It was only at the military’s insistence that it was down-scaled to .223/5.56mm. So… what about the .308 AR? They are made, to be sure, and Ruger’s SFAR is one of the more popular rifles in that caliber. (SFAR… Was Ist Das SFAR, I hear you say? Small Frame Autoloading Rifle. Of course!). So where did it come from?
Ruger’s ARs
Ruger has been making AR-pattern rifles, mostly in .223/5.56mm, since 2009. As with most guns Ruger makes, the SR-556 was well-built, accurate, and affordable. They continued in the AR game, making variations-on-a-theme ARs in different calibers, barrel lengths, etc.
Enter The Ruger SFAR .308
Live Inventory Price Checker
RUGER SFAR 308 WIN 20" 10rd Semi-Auto Rifle - M-LOK | Black | KYGUNCO | $ 997.79 |
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Ruger SFAR 308 Winchester 16.1in Black Anodized Semi Automatic Modern Sporting Rifle - 20+1 Rounds - Black | Sportsman's Warehouse | $ 1074.99 $ 1021.24 |
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Ruger SFAR .308 Win AR Rifle with 16.1" Barrel, Black - 5614 | Palmetto State Armory | $ 1299.99 $ 1099.99 |
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Ruger SFAR .308 Win. / 7.62 NATO 16.1 Barrel 20 Rounds | GrabAGun | $ 979.99 |
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Then, in 2014, they came out with a game-changer… a 7.62/.308 AR, about the same size and weight as one in .223. Rifle shooters’ ears pricked up when they heard this. Finally, you could get .308-level performance in a light, handy rifle! Since then, they’ve added 6.5 Creedmoor to the stable.
Ruger’s SFAR, especially in a caliber such as .308, which is fairly easy to get, is a winner. Based on a .223-sized frame but is beefy where it needs to be. This rifle was the answer to many AR shooters’ prayers. Why? How’s it different from other .308-based ARs?
In two words, it’s smaller. I own ARs in different calibers and can attest to the fact that the ones in .223 are fairly light and easy to get into action. What if you wanted more oomph like the .308 delivers? After all, like I said earlier, .308 is pretty easy to source.
But many shooters balked at the size of the .308 ARs. They had to be built bigger, it was thought, to hold the .308’s pressure. Well, Ruger figured out a way to do that AND make the rifle about the same size as a .223 AR. Neat trick. They also made it compatible with the 7.62 NATO (7.62×51) military cartridge. Why does this matter?
.308 vs. 7.62×51 — Aren’t They The Same?
Before we get into more detail, here’s a question I’ve been asked before so I thought this might be a good place to stick this in.
Please know that there are differences between them. Military (7.62mm) brass is thicker than the .308. That alone would cause an equal powder charge to show higher pressures in the thicker case than the thinner one due to its slightly decreased capacity, all else being equal.
Also, the chambers of 7.62 rifles tend to have about .006″ more headspace than the .308. This allows functioning when many rounds are fired and things heat up, either semi-auto or full-auto. Since the .308 is loaded a bit hotter than the 7.62 (2,000 PSI higher), it could cause cases to stretch if fired in the longer chamber. That’s not good.
So, I have to say this… you shouldn’t fire .308 in a 7.62×51-chambered rifle. The other way around is cool — go ahead and shoot both in your .308. You may never have an issue, but I at least had to mention this. To end this little rabbit trail, know that the Ruger SFAR is good with either caliber. You might find some 7.62 NATO surplus a bit cheaper than .308. For more details on this topic, check out our recent post here.
The Rifle
When I was asked to do this review, I turned to my good friend Ed. He’s a teacher in a local high school but previously had been a county deputy for many years and has the guns to prove it. He loaned me his newly purchased SFAR (that he had put exactly three rounds through) to review. I gladly accepted. So, what about the SFAR?
The SFAR is built like other Ruger rifles… in two words: tough and reliable.
The upper is forged from 7075-T6 hard-coat anodized aluminum and includes a brass deflector and forward assist.
The full-length Pic rail allows placement of just about any optic you desire. The lower features a flared mag well to allow quick insertion of the 10-round magazine that comes with it.
All the controls are pretty much where you’d expect them to be, and the M-LOK slots and Pic rail duplicate those found on most ARs.
The six-position Magpul MOE SL stock allows length-of-pull adjustment and handguard /receiver QD sling attachment points allow a conventional sling to be mounted easily.
The heavy-profile barrel is made from 4140 chrome-moly steel and features a 5/8″x24 thread that houses Ruger’s “Boomer” muzzle brake:
The rifle features a 3/4″ 4-position rotary-regulator gas block that allows adjustment for different types of ammo mounted on the rifle-length gas system.
Lastly, the Ruger Elite 452 trigger is included. It provides a 4.5-pound, 2-stage trigger pull. For more details, visit the SFAR Spec Sheet page here.
Accessories
The SFAR takes AR accessories. That’s about what you need to know, and you already knew that…
My friend, Ed, likes to accessorize his guns. That’s great – he knows what works and what doesn’t, being a former deputy. To his SFAR, he has added a sling, a Bushnell scope, a bipod, and a 20-round PMAG. You can see some of these in the photos.
Specs
- Weight: 7.2 lb.
- Height: 7.20″
- Stock: Magpul MOE SL
- Handguard: Free-Float with M-LOK Attachment Slots
- Finish: Type III Hard-Coat Anodized
- Grip: Magpul MOE
- Sights: None
- Barrel Length: 20″, 1:10″ RH twist, 5 grooves
- Thread Pattern: 5/8″-24
- Capacity: 10 (one SR25/AR-10-pattern .308 Win/7.62 NATO-compatible magazine included)
- Overall Length: 39.50″ – 41.25″
- Length of Pull: 11″ – 14.25″
This is a full-blown AR-compatible rifle, so just about any accessories made for that platform should work here.
How Does the Ruger SFAR Shoot?
I grabbed some .308 ammo that I had on hand and headed to my backyard range. Targets were placed as close to my 100-yard backstop as I could get — a major maple tree blew down and blocked total access. Even so, I was able to get 97 yards. I know, it wasn’t 100, but you’ll at least get the idea. I stuck the rifle on an MTM CaseGard MSRMS – ArmAR™ Modern Sporting Rifle Maintenance Stand and let fly.
All loads used 150-grain bullets. Here are the results:
A weird thing happened when I was shooting the Superformance, something that hasn’t happened to me in a very long time. Usually, high-end factory loads are consistent and safe. One of the 5 shots I took at the Superformance target (the flyer) had the primer pop out upon firing.
This particular load was way over-pressure. You can see if you magnify the photo, slight impressions of the bolt face and extractor on the case head.
Again, this is truly weird and unusual for factory ammo. The rifle was fine and handled the load easily. It handled the “boom” better than the shooter…
Conclusion
If you are in the market for an autoloading .308 that also shoots military 7.62 NATO rounds, take a look at the Ruger SFAR. Built to be about the same size as a “normal” .223 AR (whatever that is), it is easy to tote and lighter than many other AR-10-compatible rifles.
With the specialization that defines current .308 ammo, you could load lighter bullets and go after varmint- or hog-sized game and then turn around and re-zero your scope for deer slayer, heavier-bullet stuff. If you are a competitor, the SFAR would work, as well. My sample was accurate and I have no doubt it would work well at longer distances. Maybe you shooters out there who have had more experience with this aspect of rifle shooting could leave a comment. Anyway, for a general “do-all” rifle that would fit my purposes, I like the SFAR. I’m glad Ed lives nearby — the rifle is available!
About Mike Hardesty
With experience spanning over 45 years, Mike Hardesty has long enjoyed shooting and reloading. An inveterate reloader, he casts bullets and reloads for a diverse array of firearms, each handled with long-practiced precision. Living in rural Indiana, his homestead boasts a personal 100-yard range where he shares his love for guns to his four sons, their wives, and eleven grandchildren. As a recognized author, his writings have been featured in notable platforms like Sniper Country, Bear Creek Arsenal Blog, Pew Pew Tactical, TTAG, Dillon Precision’s Blue Press, and Gun Made, revealing his ongoing passion for firearms at the age of 72.
Out to 450 I’m getting MOA with Federal Terminal Ascent 175s. SIG Hunters 165 produced similar results. White box ball ammo isn’t as good nor would I expect it to be. It runs bout 3”. I haven’t stretched it out any farther but would expect the 175s to do well out to 700. I saw some YouTube criticism and some might be legit but some were self inflicted. The adjustable gas port is NOT a radio dial. Find the setting and leave it alone. I’ve never even touched mine since purchase. Quit trying “to make it softer” and be a… Read more »
Yeah I STUPIDLY forgot to put my plugs in, and fired. Holy crap I WILL NOT make that mistake again! Love my SFAR. Shoots great. Light enough to carry through the Maine woods.
yea 308 is not 556 will leave ears ringing for hours
I have this rifle in the 16.5 variation with 250 rounds expelled with zero problems-
Part of the internet problem-you never hear about the good only the bad-
Sorta like a Democrat whining about Trump being a tyrant-over and over till it’s believed-
Seeing the long term reviews where there were multiple problems that required several trips back to Ruger to fix I’ll give this one a hard pass and buy an actual AR-10 pattern AR-10 not a shrunk down version with questionable reliability and longevity
Yep, this is most likely the most unreliable refer to come to market in 50 years. A lot of problem examples out there.
I think this is one rifle that’ll never be “fixed”.
Has Ruger finally un-screwed up this rifle?
Anyone have a reliable SFAR yet or are they still all lemons?
With an Belgian FAL 50.00 and an Springfield M1A, I am conflicted on buying another 7.62. I have too many AR’s already. Oh my. What to do ! At nearly a buck a round and with mil surplus 7.62 long gone, I dont shoot enought to reload. But I do want an AR10 equivilant. And that means a new safe. And maybe a new wife. Or no wife at all. A new rifle would incite marital distress. At age 70 I am over the bar scene and not likely to seek Ukrainian gals. So Im stuck. Its keep the wife… Read more »
Thailand is nice, women are supportive and pretty
with the cnc you can make your own ar10 upper and lower with lots of choices that are not commercially available best of both worlds
It’s an over complicated system for long range action. However, it’s stunning appearance could win a pretty girl contest!
It sounds like a hodge-podge of AR-10 and AR-15 components and accessories. When I want to add or replace parts, or accessorize, which should I get? Are its AR-10 parts Armalite or DPMS or Ruger’s own format? For example, what format barrel nut and handguard does it use? I carry a Zip-Loc Baggie in my range bag with small parts – gas rings for bolts, various springs and circlips and roll pins and detent pins – stuff that I have needed to replace in the field to save the weekend. Should I carry AR-15 parts or AR-10 parts with this… Read more »
Ya know you can buy parts for the SFAR by name and save yourself the overthinking. It ain’t hard.