Sig Sauer 556xi: First Impressions

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gread

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Hello everyone, sorry it took me so long to get around to my first impressions of my new Sig 556xi. Sorry about the lack of pictures, I took more during my days shooting but the SD card was accidentally formatted.

One disclosure before I start: I would consider myself a novice with guns. I have probably shot less than twenty different manufacturers and calibers in my life-time, and I am using my friends' custom AR15, Yugo AK, and AK47 as reference.

First thing was getting the rifle. I won a bid for $1100 on Gunbroker through Gun Galaxy in Ohio. The dealer was very prompt in sending my rifle, but was somewhat rude to me during the process.

Upon opening the box at my FFL: I liked it. The rifle felt good in my hands, was aesthetically pleasings, and only seemed slightly heavier than the AR I had shot before. With the reviews I had read on the Sig 556 line being very close to 50/50 - love/hate, I was excited to shoot it for myself. I picked up some 5.56 ammunition and eagerly awaited the weekend.

So, onto the shooting:

This review is based on a modest amount of shooting: The first weekend I shot 100 rounds of American Eagle 5.56, 55 grain ammunition. Second weekend I used a mix of 40 rounds Federal5.56, 62 grain and 20 rounds PMC .223, 55 grain.

I'll start with the Pros.

-The ambidextrous controls made it very easy to operate, and switching the charging handle from side to side was a breeze.

-The AR style lower and three-position gas block made it easy to field strip.

-The flip up sights were a nice touch, and I much prefer the flipping peephole sight to the rotary type on the older 556.

-The heavier fore-end and ergonomics made it feel very balanced imo. Getting a good cheek-weld and sighting in was more fluid than with the AK or AR.

-Being able to buy AR magazines is great, P-mags are $12 each around here.

-This thing positively ejects! Brass landed consistently about 20ft to the right and 5ft forward. Lefties need not beware of brass in the face.

-I just felt more accurate with this rifle, I loved the overall feel of it. There was something about it that I just liked better than the AK or AR Platform.

On to the bad.

- The worst thing to start a new rifle relationship is disappointment the moment you get to the range. I loaded up the magazine, and put it in the magwell. It fell out. I tried again five times with no avail, the stock magazine would just not lock into the magwell. No problem, my friend came to the rescue with some new P-mags which seemed to fit just fine.

-The first 30 rounds went off without a hitch, it was the second magazine when the problems began. I got through about five rounds before I had seven failure to feed issues. With each one, the bullet would get lodged on the wall of the upper just beneath the chamber. Using an AR system before, it seems that having a feed ramp would solve this issue.

-This may not be a huge issue, but the thing shaved a lot of brass. The action was more brass colored than black after thirty rounds of shooting.

-The extractor pulls casings to the extreme, a vast majority of brass ejected had large scrape marks, dents, and even chunks missing.

-I am happy to say that on the second weekend, I had none of these problems arise. However, they were replaced by a new issue. There were 6/60 bullets that did not fire. The firing pin struck the primer, but not with enough force to ignite the gunpowder.

-One last thing of note: I know this is expected for such a new rifle, but there is absolutely no aftermarkert for this rifle. When I call Sig dealers about new parts, they seem unaware of any of the parts that Sig toted at SHOT show such as the Carbon-Fiber Rail or barrels chambered in 7.62x39/300BLK. The trigger assembly is a weird combination of AR and AK triggers, and the hybridity of the 556xi makes a rifle that does not fit into any aftermarket following.

Conclusion:

I really want to like this rifle, I really do. I was so excited for it to come and very giddy about having something different to all of the Black rifles and Kalashnikovs at the range. I know that these issues can happen from time to time, but I feel that these issues happening multiple times in a row is unacceptable. I expect a $1200 rifle to perform correctly out of the box, and the Sig 556xi was a disappointment.

I hope this review was useful and helps those of you that are not sure whether to buy the 556xi.

I would love any and all help with these issues, as I am a novice I am not sure what to leave up to bad quality and user error. I want to make sure I am eliminating user fault as a cause.
 

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What mags?

Simple things often are the cause of this stuff.

Best quality mags and good milspec ammo should be used to start with.


Willie

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gread said:
- The worst thing to start a new rifle relationship is disappointment the moment you get to the range. I loaded up the magazine, and put it in the magwell. It fell out. I tried again five times with no avail, the stock magazine would just not lock into the magwell. No problem, my friend came to the rescue with some new P-mags which seemed to fit just fine.

Several years ago when I bought my 556 it came with a Sig made magazine. They had a bad reputation for reliability even then on the original model so this experience does not surprise me.


Willie Sutton said:
Best quality mags and good milspec ammo should be used to start with.
+ 1 Willie gives some excellent advice here.
 
Stupid question, did the gun have enough lube?

Last range visit the guy next to me with a new AR had the same issue with light strikes. We opened it up and it was pretty dry so after some Hoppes # 9 and cycling it a few times issued solved, at least for that trip.

I don't know if the Sig requires the same amount of lube as an AR but it couldn't hurt to check.

Best of luck with the new gun, it looks really nice.
 
Willie: I used Magpul P-mags, they seem to do well with my friends who use ARs. Is there a different magazine you would suggest?

Baldman: I ran it with the Sig lube that came in the box. I heard they like to run wet. If what you say is true than they like to run REALLY wet.
 
Were you trying to lock a mag in the rifle with the bolt closed and 30 rounds in the mag? If so, try loading 28 and see if it locks in. Will it lock in with an empty mag?

The dealer was very prompt in sending my rifle, but was somewhat rude to me during the process.
What does this mean, exactly?
 
I have experience with two different Sig 556r rifles, both of those functioned 100%. Accuracy was on par with the AK. I feel that those are a legit alternative to the AK. Sorry to hear about your issues, hopefully break in will do it some good.
 
Were you trying to lock a mag in the rifle with the bolt closed and 30 rounds in the mag? If so, try loading 28 and see if it locks in. Will it lock in with an empty mag?

I have heard this strategy before, what exactly does it do?

We tried the same magazine in my friends AR as well while we were out shooting and it wouldn't lock in his rifle either, (with the bolt forward or back) so we attributed it to a poor-quality magazine.
 
What does this mean, exactly?

The good: The rifle was a good price, and the rifle got to me three days after the payment was received.

The bad: I was overly cautious, having been ripped off a few times before over the internet. In the past, everything would check out with the seller, yet somehow I got either something other than what I ordered or a broken part (this happened to me a few times with car parts). Being jaded by these past occurrences, I checked everything online: made sure he was a Sig dealer, looked at his website, etc. I was thoroughly pleased until I did my final check. I google-mapped his address and came up as a house across from an elementary school in Ohio. I know some people run shops out of their houses, but I had gotten a bad deal enough times to know that not finding a storefront was a red flag. I know stuff like this doesn't usually happen on gunbroker, but I always seem to be the exception when it comes to bad deals. I sent Paul at Gungalaxy an email explaining my hesitance because of bad transactions in the past. I politely asked if he would send me a picture of the rifle to confirm it was the correct product. He sent me a very crass reply that I will paraphrase as "Time is money, and taking a picture of this rifle for you is a waste of my time." I understand that my request was a little unusual, but to refuse me and then tell me that, as a customer, I was a waste of his time was not the right way of going about it. It takes maybe 30 seconds to snap and send a picture, is that really so much to ask?

Sorry about the long text, I just wanted to convey the full context of why I personally was not satisfied with the experience. I dislike being the difficult customer, but even so, I think when a customer is sending you $1100 for a product you should be more polite. This is my opinion, though.
 
I don't think asking for a pic of the rifle is being a bad customer. Quite the contrary. Seller sounds like a tool to me.

Loading 28 or 29 in a 30 round mag allows some room for the top round to compress into the mag as you seat it against the bolt. Some mags don't like being seated full on a closed bolt.
 
I would add that the trigger pull on the one I tried was pretty junk. I wasn't expecting a Geissele but the CMMG kit in the last AR I put together was considerably better. :D
 
I enjoy reading the posts on the Sig rifle. I do not own a Sig product at this time. I have to say I have been mystified by what appears to be a less than stellar product that Sig has put on the market with the 556? Sig has such a great reputation for their military arms, how did that not translate over into their civilian products? Not trying to hijack, just thinking out loud while we are talking Sig with issues.
 
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