SIG SAUER 556 Russian

Black SIG SAUER 556R with the barrel pointed to the right on a white background.

SIG SAUER came clean with the 556 and owned up to its Kalishnakov roots with their new 556R. The 556 rifle has always had an AK-style action, which contributes greatly to the reliability of Sig’s rifle platform, but now Sig has released a 7.62×39 caliber version that is compatible with standard AK-47 magazines.

The rifle uses an AK style gas piston but incorporates a two-position gas valve, presumably to adjust the gas system for use with a suppressor. A telescoping stock makes the rifle easily adjustable for shooters of various sizes, and it also folds down out of the way for easy transport or CQB use. A marked improvement on the AK platform is the incorporation of an M1913 Picatinny rail to allow for the quick installation of scopes or holographic sights. Optional handguard rails increase the versatility of the platform even further, while an ambidextrous safety selector and ambidextrous rear sling mount make it easy to shoot left or right handed.

The 556R ships with a factory-included red dot aiming system.

SIG 556 Russian Specifications

  • Operating system: Gas piston, rotating bolt
  • Caliber: 7.62 x 39mm
  • Stock: Folding / telescopic
  • Forend: Polymer
  • Upper receiver: Steel, Nitron finish
  • Lower: 7075-T6 aluminum, Hard coat anodized
  • Barrel length & twist: 16”; 1 in 9.5”
  • Magazine: AK-type, 30rd
  • Length overall: 36.1”; 34.6” collapsed
  • MSRP: $1266

Have you checked out the SIG SAUER 556R? What are your thoughts? Share in the comment section.

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Comments (15)

  1. I picked up the Sig556 chambered for 7.62×39 and got three rounds through it before it completely puked up. I had problems with the gas piston which were solved after a 3 week wait for Sig to fix it. Once it was returned I ran what ammo I could find through it, including 20 rounds of steel case and another 160 rounds of mixed brass and it performed flawlessly. The gun feels great and while I haven’t had time to do a group test I was able to shoot a 12″ target full of holes from 150 yards handheld (first 20 were all on target but a muddy field cancelled out return checks!)on a windy day. The Sig is a better rifle than I am marksman so I’m very happy with it. I have another Sig 400 in .556 and a Wyndam .556 and have found all three to be very good – enough so that I sold another DPMS AR after getting the Sig 556. Now if I could just find that cheap 7.62 ammo I kept hearing about….

  2. Took my 556R out to the pasture for its break-in last Saturday firing only Herter’s 122gr FMJs in the Sig provided Tapco 30rd mag.

    With the exception of a little difficulty in chambering the first round, the rifle performed flawlessly, no FTFs or FTEs with nearly 200rds fired. My son and I continuously fired a full mag each without incident.

    It didn’t come with iron sites, but my June 2013 manufactured rifle came with Sig’s Chinese 3X scope and not the red-dot shown in the above photo. Accuracy was pretty good right out of the box but I’ll need a little more time at the range to lock it down.

    Overall, I’m extremely satisfied with the 556R.

  3. My 556R eats steel case ammo like a fat man at a buffet. I have never had one single FTF with mine. Hope yall have the same luck.

  4. So, somebody tell me WHY the U.S. mil still has the M16, gas-fouling, micro-locking-lug op-system, w/ NO regulator arrangements for the greater probability of fouling-malfuctions, not free-floating bbl…would like to see a shoot-off between sig556 & AR/M16! & a dirt/dust test, & a cleaning-time comparison.

  5. Heya excellent blog! Does running a blog similar to this take a lot of work?
    I’ve absolutely no understanding of computer programming however I had been hoping to start my own blog in the near future. Anyway, if you have any recommendations or tips for new blog owners please share. I understand this is off subject however I just had to ask. Kudos!

  6. The AK-47 is by far my absolute favorite! I currently have the WASR 10 with a good milled mag well so the mags fit nice and tight (unlike most). I’d prefer to get another, any suggestions as to where to find a deal?

  7. @Tim-You put crap ammo into a Sig and you didn’t know it was going to vomit?! Come on man…garbage in, garbage out.

  8. Good news! While my 556 Russian had many failures with the steel cased ammo, the Winchester white box brass worked with no issues. I ran the M67 also with no problems. I am still disappointed that this weapon is picky about what it eats. Also the optics on this weapon is crap. The kill flash keeps coming loose.

  9. I bought a 556R. It has averaged 3 failure to ignites per 20 rounds with both Wolf and Tiger. I am going to try Yugo M67 and Winchester white box brass. I bought this weapon to shoot the less expensive commonly found Russian made ammo, not hard to find brass.

  10. If you’re on a budget, don’t buy this rifle. It will not fire steel cased ammo reliably at all. Worse than that, Sig states that doing so will void your warranty. Brass 7.62x39mm is expensive.

  11. Interesting. It looks like in this photo, the mag release has been photoshopped out. I found some other photos from SHOT that show the mag release; it is a tab hanging from the front of the trigger guard. I think you can actually see the pin for it in this photo (toward the top of forward part of the trigger guard) but the release itself is missing.

    I am psyched for this! I hope they release a pistol version for SBR’ing….

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