Sig 556R

[poolingmyignorance]

Hi everybody,
I've been lurking here for a little while reading, and I couldn't find anything on this topic so I thought I'd ask. I have a SIG 556R I purchased new, and immedately began to have fail to feed, fail to fire, fail to eject issues. I had it returned to sig, for repairs and it did improve dramaticly. But I still get the occasional fail to eject. What I notice is the bolt carrier isn't always pushed back far enough to completely toss the casing out. ( I'm aware of the two port settings, and this some times happens within 30-60 rnds of a freshly cleaned gun) What I've noticed is, that the tension from the hammer is so strong against the carrier as it crosses over it while hand cycling is sufficent to keep the bolt held open. Almost feels like the front edge of the carrier is snagging on the rear face of the hammer. I'm curious as having worked on some AK's and Siaga shot guns, should I simply reprofile that top corner of the hammer so the carrier doesn't snag, or send it back to Sig and let them treat it as they see fit. Seeing as last time it took me almost 2 months to get it back. Any thoughts or personal experineces with insight would be appricated. Thank you.

 

[Zerodefect]

Maybe the bolt carrier did come all the way back but just did not release the case and then came forward and jammed the case in.

I'd check the ejector for burrs and make sure it's good and springy. Same for the extractor. I would try playing with the gas block, and make sure to try some good hot ammo. Your carrier should smooth out a bit. While it drags if you're slow and careful, if you rip on the charging handle good and hard it should move fine. I would not cut or adjust anything.

Since this is a rare rifle, I'd try postign in a few places. Try here as well:
http://www.ar15.com/forums/f_6/45_Sig_Rifles.html

 

[RAINS]

Post here http://www.sigarms556.com/

They know everything about 556's.

 

[Averageman]

I have owned two Sig 556's. The 556 and the 556R; neither was correct from the factory and both has some serious issues.
I wish you the best, but I finally found the best price and traded it.
Thanks
A/M

BTW I waited 6 mos for Sig to correct the problem. I had some serious C/S issues and will never reccomend or buy another Sig product.