Has anyone here upgraded their 556 to this NEW lower???

Very nice....I really like the solid trigger guard, and the fact that it takes standard AR15 magazine catch parts.

I like it! it reminds me of the ER lower. is this coming on the new guns?

Nope. Made in Canada by NEA. From what I've read, NEA may be releasing a model complete with Swiss internal parts.

i'm more interested in the welded rear diopter.

I probably would if I could get one for a reasonable price. Something tells me I can't.

I'd be interested if they made a version that took the 55x style stock.

I read that the price was $500.00 STRIPPED. I dunno for sure. As far as I know, this is actually the first non-Sig lower that has been introduced since the 556 came out. There has been a lot of talk by some of a new lower, but alas, nothing ever came to fruition.
I like the look of this new lower, much more so than the SIG. I also read that NEA will be offering an adapter to work with the original side folder. I REALLY like the solid trigger guard. I read a few years ago, where someone cracked an ear off their's.

A big advantage is, of course, that the upper is the controlled part on the 556, so a new lower can be acquired without paperwork or shipping to a dealer.

Since it accepts a standard AR15 magazine catch, I would more than likely use an Ambi Catch. The standard location on the Sig lower is a bit of a stretch.

Wow, $500? I mighthave to add "new machined lower" to the list of stuff I am working on....

There were at least four other perosn's who in the last few years suggested on producing a new lower, and those price estimates were pretty much all the same. Around $500.00 Presently, only NEA has actually done it. Aurora Industries had PICS of two different styled lowers, both were superb in aesthetics, but nothing ever came to be. I personally believe there is a market. As much as I like the SIG, their lowers (except for the 550 series IMO) are ugly.

PICS of the two Aurora lowers. Note that unlike the NEA model, these two utilize the SIG 556 magazine catch assembly.





I like the first one.

I'd like it even better if the lower had provision for an AR grip.

Personally speaking, the Sig grip is by far my favorite out of any grip on any rifle to date. Though there are some that don't like it.

+1, I agree with LIONHART on this one if they would only move the safety to a better position. Sick rifle BTW!

I agree. To do all the design work and leave this one out is a bit strange. I like the SIG grip, but this would put it over the top for me.

I don't get it. How is this lower superior to the original Sig 556 lower that used AR stock? They share similar styling even. The main thing I can see here is the bigger trigger guard for gloved finger, but that seems to be the key differences, and then there are a few minor cosmetic differences.

Why cant Sug just import the 550 or 551 lower and put them on the 556 I have both and the 551 is my favorite of all. I like the mags as well but they are far too expensive. I bet SIg could import teh 551 lower for a little more then it cost to make teh current 556 lower.

I would buy one. Not for $500 though. Considering a high end billet AR lower can be sold for less than $250 retail, I do not see the 556 lowers having much of a fighting chance in an American market.

And I like the non folding lowers much better. Hopefully CDNN will buy some and sell it for less.

Just looking at that I can see all sorts of ways to simplify it from a machining standpoint while retaining good aethetics. Way too many setups necessary to make that as designed.

Well by all means, produce 'em.

Well, I could, but to be honest the big question for me is "why"...it wouldn't do anything different than the stock 556 lower excpet have a bit tighter fit, and I can't honestly see a reason someone would plunk even $300 down for that.

If you can clarify what the perceived advantage is, I am all ears.

I think a lot has to do with aesthetics, having a lower that closely matches the 550 series, but with the ability to take standard AR magazines. Sig IMO, got it wrong starting with the first lower, and than the revised one on their current Classic series. Take a look at the video below. Here we have a Swiss lower that resembles a 550 series, but out of alloy, not stamped steel. It starts at around 2:50 on the 553.

http://www.youtube.com/watch?v=Gy05V3Sdl_U&feature=player_embedded

Now, look at the lowers that are shipping with the new 551-A1. Again, just awful IMO. I cannot believe why Sig couldn't incorporate the above lower with their new offering. The trigger guard is hideous on the 551-A1.

Many have invested thousands into their 55X clones, but I still believe that the cheap and plentiful AR magazine is the way to go. By having an inspired 55X lower one could complete the look of their rifle, without spending $1500.00 or more on a factory lower, and $50.00 for proprietary magazines.

It has been said that MFI will be selling their 55X series sights next month. I believe the front/rear combo is around $380.00. No doubt that these will be fantastic sellers, especially since acquiring a genuine set could easily approach $600.00 or more. I believe there is a market for the 556. The whole point is, it's NOT an AR15, and the platform has potential, but what Sig brought to market has been a let down for many, since it doesn't follow the lines of the original series of rifles.

Check out this other video. It's a brief review of the Sig 551-A1. My point is, even a blind man can tell the difference on what's authentic and what isn't.

http://www.youtube.com/watch?v=K6fWpJG0dLc

Either a paddle mag release and/or a mag release button that can be reached by human hands. The ability to accept a 55x type stock, price it at $300 and I will buy one.

Thanks for the feedback...several things are in the works that will make the SIG556 lower erognomics much more "normal hands" friendly, and at a price point much more affordable than doing a whole new lower....the need for an E.T. length index finger shoulod be take care of soon.

So I can get ride of my my fake nails when I shoot my SIG?

Yup, at least for practical purposes, if you want to keep them for style that is your decision.

Don't spend a lot of time posting in the Sig forum, but I wanted to +1 this. I've briefly considered picking up a classic lower from Colorado Gun Sales, but they're $700, contain no internals, and the stock would run another $250-300 over that. Plus others have complained about the quality of the metal they use. If you could produce one for $300, I'd be the first in line waving a couple portraits of Franklin.

Sorry, but you'll have to wait your turn. I've been standing in the new lower line for a long time now..I'm not giving up my place yet...lol

Sven, if you are going to add a new Sig lower to your list of products, perhaps make a 556R lower that takes drums without mods (preferably out of steel if that is not asking too much).

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