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Discussion Starter · #1 ·
I've been shooting my SR556C rather regularly in the year or so I've owned it and just reached the 5,000 round mark. Most of this has been on semi- but I have fired several hundred rounds of this on a select fire lower. In all this time, the gun has been accurate and reliable with the only exceptions being some failures to extract with some Silver Bear and WOLF steel cased ammo. I do note that the gun runs properly with Hornady steel cased ammo and WOLF 75gr ammo but doesn't seem to like the lighter WOLF or Silver Bear stuff. The gun runs fine on setting #2 with brass cased ammo.

The gun has been used in a couple of carbine classes and has also been used to shoot jackrabbits and for general plinking and range practice. While I do see some internal wear, I note nothing alarming or unusual and I've not had any broken parts, etc. Some speculated that the Ruger piston was of improper design and would break bolts in the few thousand rounds but mine seems to be going strong.

Next report at 10,000! :D

The carbine in its current form:


Carbon fouling under the gas block. This is a hard spot to get to for cleaning but I believe Ruger's decision to vent under the gas block is a good one. This keeps the hot gasses away from hands, slings, flashlights, etc.


No carrier tilt:


Some slight wear on the face of the buffer:


An overall shot of the bolt carrier assembly and BCM charging handle:


Bolt carrier and bolt:




A view of the upper:


Some wear from cam pin drag. The POF roller cam pin has been in the gun pretty much since it was new:


Barrel extension:


Gas piston, regulator and spring. My usual regimen for cleaning is to soak these parts in Bore Tech C4 and wipe with a rag.



Inside bottom edge of upper:
 

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Ohh, good stuff for me. I've been kicking around the idea of one of these, and I'm getting pretty close with the SR556CLA

Thanks
 

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I'm loving my SR556 too. Somewhere around 3,000 rounds now with no issues and very little time spent cleaning. Coming from scraping and scrubbing DI guns, you've gotta love that. :D
 

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Thak you for your research! I have an SR556 and love it! I bought it when it first came out. It has functioned great with everything I have put through it, though when I use 223 I have to put it on setting 2. All things 5.56 I use setting one. I did very little to mine except I added a sling, Magpul foregrip, and EOTech 512 using the iron sights as a witness (if needed). I absolutely love it! I also have a Bushmaster and an Armalite... great guns also, but the SR has won my heart! I also have an SR22 that is a great trainer...
 

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Discussion Starter · #7 ·
It has been nearly two years and I'm just now hitting the 7,500 round mark. The Ruger hasn't been cleaned since pictured above and has gone 2,500 rounds with no cleaning. I've added oil a few times (probably too much since it looks like most of the oil has turned into some sort of slurry) but no maintenance otherwise.

Internal wear really seems to have leveled off and I don't notice anything that looks any different from where it was 2,500 rounds ago. All the finish is worn off the face of the trigger and much of the finish has been worn off the bolt stop. The dust cover detent is getting pretty loose from being hit by the bolt carrier. There's a pretty good amount of carbon under the gas block and some carbon accumulation that's bled out of the gas regulator. Even with the accumulated crud, the gun's running just fine on gas setting #2.

I didn't disassemble and photograph the gas piston parts. I'm actually waiting to remove those because I'm curious to see if the regulator, etc will freeze up with accumulated fouling.

I should note that the lower doesn't have as many rounds on it as the upper since I've run the upper on a select-fire lower a number of times. Still, it does have a good amount of cycles on the buffer tube and is probably no more than 500-1,000 rounds behind the upper.

Without further ado, here are the pictures.

An overall photo of the carbine.


The buffer and lip of the buffer tube.



Operating parts out of the upper.







Fouling near the muzzle and gas block.






Inside the upper and barrel extension.
 

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Discussion Starter · #14 ·
is there an update for 2014?
Well, yes and no. I have had the gun out to the range a few times but haven't done much training with it. Since my last posting, I'm at about 8,000 rounds.

There's a bit of training coming up this fall and I will try to save some money for ammo and tuition and see if I can't finally hit the 10,000 mark.
 

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Bump. Looking to trade for one of these this afternoon. Thanks for the write up, I havn't asked about round count on the gun yet but looks like it's a non-issue for the most part. Pretty sure this one hasn't seen nearly as much use as yours, and it likely won't in it's lifetime at our place.
 
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