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Discussion Starter · #1 ·
This is what SIG should have made in the first place. I came across their ad in the latest SGN Treasury. MFI is a good company with great customer service. I don't own a SIG 556 but I would love to have one with these conversions.

http://www.mfiap.com/smallarms/sig556.htm
 

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Ha ha, bitchin.

Mine is done and ready for pickup. :twisted:
 

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I assume you have either do the conversion yourself or have them do it.
 

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Discussion Starter · #5 ·
Call Mike Frost at MFI to make sure, but I think you will be able to do the conversion yourself.
 

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My conversion, w/the 55X lower, and w/the 556 lower... Hehe :wink:



[
 

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love that folder! :razz: i just ordered from ace their fold. adapter for my 556 with the push-button release and was thus able to keep original stock! the fold. mech. is really great and 100% tight both fold. and unfolded, i did have to cut buffer tube 1 inch shorter to make up for the
length of the adapter! i am still looking for a ft. and rear sight havent found either that i really care for! hopefully those items in the ad at top of page will be avail. soon! :hail:
 

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One thing that works/looks really good on the 556 rifles is the ACE M4-7 buffer tube with the magpul stock. Much more substantial than the standard AR tube, and it has a QD adapter. Good combo if you want an original-ish look, but don't want to spring for a folder/551 lower.
 

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j-rod said:
w/the 556 lower...

j-rod, Did you do the converstion yourself or send your upper to them? I'm actually interested in the 556 with a fixed rear sight and rail combo like yours now...
 

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Nice Rifle, I have a 556, and 1 more en route. I got on the list to get the sight set you have. I might make a 551 clone, and then just a beater for the truck.
 

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Why do they say you can't use the original SIG scope mount with their rail?
 

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Because the rail (on SAN mfg rifles) is welded to the receiver - how I had mine done. IIRC, the earlier SAN/SIG rifles have a bracket on the front of the receiver and there is a hole at the front of the rear sight base. The SAN scope mounts have a dovetail (for lack of better description) on the bottom/front of the mount, and a spring-loaded "spike" at the rear. To mount, you compress the spike into the front of the RSB, and lower the front "dovetail" onto the bracket - tension holding it in place.

If you wanted to mount the scope on the rail-model, you could get the ARMS STANAG adaptor, but you may need the riser-version. I have been contemplating doing this with a G3/Hensoldt scope - set the scope on the 300m setting (.308 cam), dial it in at 300m, and just leave it until I can locate the .223 cam... All the ground in between will be covered :wink:
 

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Is that a 556 in the picture? that has been converted[/quote]

Yup... :grin:
 

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Mine's done, put the list of improvements in a separate thread.

 
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