View Full Version : SIG 556 with Aimpoint T-1, H-1 or Sig knock-off AND Aurora or Sig diopters
Since people tend to poorly title their threads, or post pics in threads completely unrelated to a specific subject and with no accompanying text to make it searchable...
Can anyone who has a SIG 556 with one of the Aimpoint T-1, H-1 or the Sig knock-off T-1 and Sig specific diopters please post pics and tell me about how it co-witnesses, what mount you used for the optic, etc.
Thanks.
I'm still waiting on my diopters.
I actually went with a Hendsolt on an ARMS QD mount but I doubt very much they are gonna co witness. Also given the the Heldsolt is a 4x, co witness doesn't really benefit you like a 1x.
canucklehead
01-07-10, 16:55
While not a 556 (it's a Swiss Arms CQB, or Sig 552), I use the factory low mount and get good lower 1/3 co-witness with this setup.
Don't know if the 556 has the hooded front, but the field of view is a little 'busy' on my setup. Still, I prefer the T1 to any other optic I've tried on this bad boy!
http://i37.photobucket.com/albums/e95/canuckleheaddave/CQBwithT1.jpg
dwhitehorne
01-07-10, 17:38
While not a 556 (it's a Swiss Arms CQB, or Sig 552), I use the factory low mount and get good lower 1/3 co-witness with this setup.
Don't know if the 556 has the hooded front, but the field of view is a little 'busy' on my setup. Still, I prefer the T1 to any other optic I've tried on this bad boy!
http://i37.photobucket.com/albums/e95/canuckleheaddave/CQBwithT1.jpg
That rail looks higher than what I have on the classic. Am I seeing it wrong or is the rail taller/thicker? David
canucklehead
01-07-10, 20:47
That rail looks higher than what I have on the classic. Am I seeing it wrong or is the rail taller/thicker? David
You know - you're right! The 552 up here comes with no rail. It's a rail made by a Canadian guy specifically for the Swiss Arms rifles.
It IS higher than a normal flat top for sure. But if I can get a co-witness, it should be no problem with a lower rail. :)
If I had to change, I'd go with a Larue LT661 mount.
Since people tend to poorly title their threads, or post pics in threads completely unrelated to a specific subject and with no accompanying text to make it searchable...
Can anyone who has a SIG 556 with one of the Aimpoint T-1, H-1 or the Sig knock-off T-1 and Sig specific diopters please post pics and tell me about how it co-witnesses, what mount you used for the optic, etc.
Thanks.
I'm running Aurora sights and the SIG fakepoint. The dot sits right on top of the front sight, in the middle of the hood. I'm just using the mount that it comes with. It's nice and low, you can really get down on the diopter sights. I love this platform except for the placement of the safety and the mag release.
http://i30.photobucket.com/albums/c328/phazuka/HPIM0505.jpg
bondmid003
01-09-10, 02:26
phazuka did you get your sights from Aurora or did you get them from a third party?
Alright, dwhitehorne and I met up to compare parts and have determined that the factory Sig diopters are too high for use with the Aimpoint T1 in the ADM mount (http://www.brownells.com/.aspx/pid=27291/Product/AD_T1_L_AIMPOINT_MICRO_MOUNT).
The red dot sits in the post, instead of top of or above the post. :(
Looks like I will have to find some Auroras...
phazuka did you get your sights from Aurora or did you get them from a third party?
Got mine from Top Gun.
The SIG USA diopters didn't work with an ADM absolute cowitness mount?
The SIG USA diopters didn't work with an ADM absolute cowitness mount?
Did not work with this mount:
http://www.brownells.com/.aspx/pid=27291/Product/AD_T1_L_AIMPOINT_MICRO_MOUNT
dwhitehorne
01-10-10, 14:38
This is not the greatest picture to compare but it is the only one I can come up with while at work. If you look at the height of the front sight on my rifle above the sight adjusting wheel, you can see it looks taller than the front assemblies in the other pictures posted in this thead. So SHIVAN's Aimpoint with the ADM mount looks like it sets just below absolute co-witness with the Sig diopter sight. David
http://i74.photobucket.com/albums/i260/dwhitehorne/guns/IMG_2127.jpg
groovinpickle
01-10-10, 19:34
I just bought a Primary Arms (http://www.primaryarms.com) gen 2 micro dot, and with the standard (low) mount it's too low on the Sig to cowitness. It's kind of an "upper third" cowitness setup. I believe that these PA micro dots are slightly lower than a real H-1/T-1.
Anybody know how much taller the LaRue LT-661 is than a factory Aimpoint mount?
edit: for reference, I measure the center of the PA tube at 0.731" high, as measured from the top of the rail.
- SIG USA front diopter sight. 1.010 inches
- HK416 front sight. 1.100 inches
- SANS SIG front diopter. .720 inches
- Larue CASV aimpoint mount. 1.2 inches to center (approx) I think it is possibly the same as their hk416 height mount.
I don't have an AR front that I can measure easy, but the rear's are about 1.4 inches tall from the top of the rail to the center of the aperture.
I'm sure the larue 416 stuff would work with the USA diopters if you wanted a lower 1/3.
http://www.mfiap.com/smallarms/sig556.htm#front
The aurora sights are only slightly lower than the USA diopters.
Me and a few other people use original fronts...
https://www.cogunsales.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=340&category_id=11&manufacturer_id=0&option=com_virtuemart&Itemid=1
And LPA rears...
http://www.midwayusa.com/viewproduct/?productnumber=627871#enlarge
If you want absolute cowitness I think you're going to have to go with the sig knockoff micro and your current sights (the knockoff does an absolute cowitness), or measure the centerline of your micro and guestimate if a SANS SIG front will work with a low adm mount.
This might help.
http://www.mfiap.com/smallarms/sig556.htm
There are 5 different heights of sights for the SIG 556 weapons platform: Listed below from the LOWEST to the TALLEST.
1. Original SIG Switzerland / SAN SG 550/1/2 Height which we copy for our MFI Drum Rear Sight and Front Hooded Sight. This includes both SIG SAN SG 550/1 Hooded Front Sights & the SIG SAN 552 Non-Hooded Flip Front Sight.(LOWEST)
2. Aurora Front and Rear Sights which are taller by ¼ of an inch then the Original SIG 550/1/2 yet lower than the SIG USA 556 Non-Hooded Flip Sight. It is our understanding that Aurora sights only line up with other Aurora sights. Derek if we are wrong just let us know.
3. New SIG USA SIG 556 Classic which is taller than the Aurora sight height by about 1/8 of an inch. These are actually copies of the SIG 543 Limited production from the 1970s that were shelved for the SIG SAN 550 series design. Basically a design resurrected from the dead for whatever reason.
4. SIG USA 556 Flip Front Sight (NOT the Classic) which lines up only with their little nail file sight found in their top sight rail or their blocky clip on rear sight. These do NOT line up with the new SIG USA Classic front or rear sights. This sight is about 1/4 of an inch taller than the SIG Classic sights.
5. GG&G, Samson and other AR15 accessory manufactures have retrofitted existing AR15 Height Front and Rear Sights to fit on to the SIG 556 platform. These are all the same height as existing AR15 sights which make these by far the tallest of the 5 sighting systems.
AR 15 Height sights will offer you the most style variation as there are at least 25 different rear sight on the market for AR-15 / M16s. The draw back is that they are so tall that they interfere with scopes / optics and seriously detract from the Original Swiss SIG 550/1/2 look.
ETA: Looks like armakraut beat me to it.
bondmid003
05-10-10, 10:20
Top Gun has been sold out for awhile now and MFI did not respond to my email. Does anyone know where to find the original sig rear diopter? CO gun sales sells the front but only sells the rear one combined with the rail for an exorbitant $559
dwhitehorne
05-10-10, 12:49
I see three different listings on gun broker when you search "sig diopter" David
bondmid003
05-10-10, 19:25
Those are all the set Sig Sauer sells, i'm looking for the original set made in Switzerland by SIG
Sig's are one part $$$, one part "out-of-stock-forever."
bondmid003
Some SAN Swiss options.
GunFactory (https://www.gunfactory.ch/langwaf/accstgw90iris.htm) Phone # can be found on front pg. Ask for Rolf he speaks english.
Colorado Gun Sales (https://www.cogunsales.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=341&category_id=11&manufacturer_id=0&option=com_virtuemart&Itemid=1)
Hope it helps
dwhitehorne
06-23-10, 10:59
Bumping this back up to say I picked up a vortex sparc to try on my 556. I had read the sparc has three mounting options to afix the sight on shotguns and/or AR type weapons. The sparc came with a removable mount in a similar style to the other micro red dots. The reason I tried the sparc is that it comes with a 1/8 inch and 1 inch spacers for three different mounting heights. Well the 1/8 inch spacer seems to position the RDS to absolute cowitness perfectly with the 556 factory diopter sights. Not the most high end sight but the sig556 seems to have limited RDS options. Here it is mounted and a picture of the spacer added. I'll try and get to the range Sunday to see how it shoots. David
http://i74.photobucket.com/albums/i260/dwhitehorne/556/IMG_3180.jpg
http://i74.photobucket.com/albums/i260/dwhitehorne/556/IMG_3182.jpg
groovinpickle
06-23-10, 11:10
bondmid003
Some SAN Swiss options.
GunFactory (https://www.gunfactory.ch/langwaf/accstgw90iris.htm) Phone # can be found on front pg. Ask for Rolf he speaks english.
What's the second one from the top? Would that be an option on a 556 Classic with the standard (non-Swiss) rail?
bondmid003
Some SAN Swiss options.
GunFactory (https://www.gunfactory.ch/langwaf/accstgw90iris.htm) Phone # can be found on front pg. Ask for Rolf he speaks english.
Hope it helps
What's the second one from the top? Would that be an option on a 556 Classic with the standard (non-Swiss) rail?
The second one down on that link is a factory welded on 55x rear diopter. They are selling the diopter insert in that add.
The first item is a rear diopter that will mount on a full length rail with a matching height front. As recently more and more 55x series are coming with full length rails welded on and no welded on rear diopter.
the Colorado Gun Sales link
Colorado Gun Sales (https://www.cogunsales.com/index.php?page=shop.product_details&flypage=shop.flypage&product_id=341&category_id=11&manufacturer_id=0&option=com_virtuemart&Itemid=1)
is a shorter replacement rail for the US 556 with a rail mounted rear diopter that sits off the back, low and flush with the receiver like the original welded rear.
tenpointer
06-25-10, 22:15
I do not recall where I read it, but the comment that a better choice for the sig rifles especially with the sig front sight in the way is a compm4 with qrp2 factory mount with out spacer. Well I took off the t-1 and tried it. Lower third co- witness, coupled with larger 30mm tube makes for a much less cluttered view with iron sights still usable. I have a total of six t-1's mounted on ar's and ak's and appreciate it's compactness but couldn't find an ideal mount combo on the sig. The larue tactical 660 hk mount was the closest to co-witness I found, but the 20 mm tube size and the Swiss diopter rear provided a poor sight picture IMHO.
Here is my SIG 556-552 with the Sig Sauer knock-off T1/H1. I think that the railed 55x series (including the 556) really needs an ever slight riser with the T1 or H1 in order to have a comfortable cheek weld. I will be putting a T1 in the lowest LaRue mount, which will slightly elevate the scope.
http://img56.imageshack.us/img56/4732/dsc03234.jpg
http://img195.imageshack.us/img195/5576/dsc03233v.jpg
http://img41.imageshack.us/img41/5766/dsc03235i.jpg
Josh,
That's how I plan to setup my SBR 556 Patrol SWAT but with a classic lower and either a 3 prong FS or go suppressed. It'll also sport Aurora sites and an Aimpoint type T1 (primary arms clone w/ kill flash). Haven't decided yet but I might fo with the 552 commando HG's.
I hate resurrecting old threads, but here I go...
I got one of the LE trade-in 552s from Midwest Dist. and put a B&T rail on it. I mounted a T1 in the factory mount and it's just a tiny bit to low for me. Anyone try the Larue low mount on a 550/552 with B&T mount? Is is the same height as the factory mount?
The Larue 660 is obviously too tall. I also tried a KAC mount with all the spacers removed and it's still too tall. I suspect the Larue 660HK will also be too tall. Maybe the 751?
Ideally I'd like a lower 1/3 cowitness.
Well I ordered a Larue 661 and answered my own question.
The Larue 661 on the B&T rail is too tall for cowitness. It's maybe an 1/8" taller than the factory Micro mount. I actually like the height, since the factory diopters feel a bit too low to me, so I'll probably keep this setup.
IIRC there's a company that makes a rail that is lower than the B&T, but I can't recall who.
bondmid003
11-12-11, 13:29
HKocher, any pics?
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