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Thread: Sig 516 upper for AR

  1. #71
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    My agency is in the process of ordering 15 of the 10.5" barreled Sig 516 semi carbines for use by SWAT. These will be paired with Surefire suppressors. The guns will phase out the HK MP5's.

    Uniform Patrol still using a handful of 16" Bushmasters and S&W M&P's.

    The engineer involved in the design of Sig's 516 is supposed to be the same guy involved in the design of HK's 416. Don't know if there's any truth in that, but the individual who conducted the research for my agency was told this by Sig.

    I personally didn't find out about the desire to change weapons until the decision was made. Time will tell how well the guns hold up.
    Last edited by Beat Trash; 06-03-11 at 18:19.

  2. #72
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    h&k 416

    Quote Originally Posted by 10mmAuto View Post
    Not bagging on the 416, just setting the record straight - CAG turned in their 416s in years ago.
    oh ??? funny the Delta Operator who just deros'ed out,and the 2 guys from Langley apparently did not get the word before they spent the weekend at my house 3 weeks ago. oh yea the guns were in the trunk of their vehicle.

    heavy yes
    4 m.o.a. yes all socom calls for, to keep reliability.
    blowing up in suppressed fire??? dont think so.
    u ever spend any time on 1??? its a beast but it works. and yes i use 1 weekly

    ruger and sig??? ask some major players about them
    ken hackathorn
    l.a.v.
    iraqi gunz
    several others on this board who know their stuff, and i listen to. and yes i have way more miles using 1 than u do.
    several retailers here who sell good gear for a living
    grant and several others


    slow down, u need to spend 20 or so years using these before u make such statements.


    have a nice day
    Last edited by jjw; 06-03-11 at 19:22.

  3. #73
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    I've read the same article by Eric Poole and recently received a SIG516 for T&E. I have only put 80 rounds through my sample, which isn't even enough to burn all the packing oil out of the gun.

    Out of the box, the trigger on my sample is quite good. Maybe a little on the heavy side but it is crisp as a new potato chip. The safety moves freely, crisply and smoothly.

    There are some visible tool marks on the bolt carrier and a couple sharp edges. The gun ships with a shrouded but semi-auto carrier. I don't have one to compare it to but I'd swear the Sig's bolt carrier is identical to that used in the LWRC. Interestingly the bolt is a conventional AR bolt to include the gas rings.

    Accuracy seems on par with most "stock" AR's in that it'll put three rounds into about two or two and a half inches at 100 yards. The recoil impulse is sort of a quick slap and is harder than a DI gun and harder than some piston guns. Not that it's bad or unmanageable. It's just different. Some of this might be based on the rifle's balance point. As another poster mentioned; the gun isn't nose heavy like some piston guns can be.

    The gas system is easy to switch from "regular" to "adverse" but it's a bit more labor to disassemble than some other designs. The piston rod and return spring is an assembled and captured unit with a small roll pin holding the entire assembly together. I wonder how long the little roll pin will last but I guess it won't really do anything if it breaks other than make the gas piston rod harder to put back in the gun.

    I haven't confirmed this but it looks to me like the barrel uses a standard barrel nut and it looks like the pin hole spacing on the gas block is the same as that of a standard AR-15 front sight base. If that's indeed the case, it'll certainly simplify future barrel replacement. With that said, I do not really care for the carbine length forend and wish Sig would have used some type of intermediate length.

    The ambi mag release is kind of nifty but really is not necessary. And I'm not big on the Chinese red dot that came with the gun. I guess it works but I would have rather seen a decent set of iron sights rather than an offshore Aimpoint clone.

    If I can convince Sig to send me an F/A bolt carrier I'll see how the gun runs on a select fire lower.


  4. #74
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    My complete 516 came with a FA bolt carrier.

  5. #75
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    Quote Originally Posted by Iraqgunz View Post
    I would still love to hear and see some feedback on this upper. The claims made in the magazine were rather exceptional.
    Here's another magazine article that has some reasonable comments and is focussed only on the drop-in upper. This time it is Dennis Hayworth writing in Law Enforcement Technology:
    http://www.officer.com/article/10272...d-ar-bandwagon

  6. #76
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    Quote Originally Posted by jjw View Post
    oh ??? funny the Delta Operator who just deros'ed out,and the 2 guys from Langley apparently did not get the word before they spent the weekend at my house 3 weeks ago. oh yea the guns were in the trunk of their vehicle.

    heavy yes
    4 m.o.a. yes all socom calls for, to keep reliability.
    blowing up in suppressed fire??? dont think so.
    u ever spend any time on 1??? its a beast but it works. and yes i use 1 weekly

    ruger and sig??? ask some major players about them
    ken hackathorn
    l.a.v.
    iraqi gunz
    several others on this board who know their stuff, and i listen to. and yes i have way more miles using 1 than u do.
    several retailers here who sell good gear for a living
    grant and several others


    slow down, u need to spend 20 or so years using these before u make such statements.


    have a nice day


    What?
    "Not every thing on Earth requires an aftermarket upgrade." demigod/markm

  7. #77
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    Quote Originally Posted by jjw View Post
    oh ??? funny the Delta Operator who just deros'ed out,and the 2 guys from Langley apparently did not get the word before they spent the weekend at my house 3 weeks ago. oh yea the guns were in the trunk of their vehicle.

    heavy yes
    4 m.o.a. yes all socom calls for, to keep reliability.
    blowing up in suppressed fire??? dont think so.
    u ever spend any time on 1??? its a beast but it works. and yes i use 1 weekly

    ruger and sig??? ask some major players about them
    ken hackathorn
    l.a.v.
    iraqi gunz
    several others on this board who know their stuff, and i listen to. and yes i have way more miles using 1 than u do.
    several retailers here who sell good gear for a living
    grant and several others


    slow down, u need to spend 20 or so years using these before u make such statements.


    have a nice day
    Why would 2 guys stationed in Langley VA be staying in Northern Ohio with their duty weapons in the vehicle? Taking military weapons off post is a no no, let alone in a POV.

    Anyway. I have a SIG 556. When they were being made with the Swiss internals they were good. I will admit the QC has gone down a bit. The accuracy is below 2 MOA and it functions flawlessly. My experience with SIG rifles have been good and say for the price a 516 upper would be good for general use a civilian will put it through. If you wanted to take it into battle, I would say there are better choices.
    Last edited by cgbills; 06-29-11 at 12:44.

  8. #78
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    Last edited by Tokarev; 07-08-11 at 16:27.

  9. #79
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    Sig's gas parts and full-auto carrier.


  10. #80
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    Quote Originally Posted by mattk View Post
    Not to mention the P250. My dumbass bought one as an impulse buy for some reason shortly after they came out. What a piece of garbage that thing was. Sig's QC is severely lacking these days.
    Same here with the P250, bought in on impulse as soon as it was released. First the extraction issues, now the thing wont even lock on empty.

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