AR15.Com Archives
 Sig 516 Patrol rifle buttstock
Tygon  [Team Member]
9/24/2011 6:26:35 PM EST
I have and love my Sig 516 without a doubt a well worth investment!!

Does anyone know if it has a Milspec or Commerical Buffer tube?

I want to change it from Black to the Magpul OD stock.

Thank you.
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StonerAR10  [Member]
9/25/2011 2:20:26 PM EST
It must be commercial because I bought a Mil Spce Mag Pull and it fit to tight.
C_Swimm  [Team Member]
9/26/2011 9:37:22 AM EST
Mine came with a Mil-Spec buffer tuber.
Darith  [Member]
10/1/2011 12:06:30 AM EST
I can confirm that it is a mil-spec buffer tube because I bought a commercial spec Magpul ACS stock (which is now for sale) by mistake (the first position has a little play, but all other positions fit tight and snug). You can visually see for yourself if you remove the butt stock and view the back end of the tube (mil-spec is flat and commercial has a 5° slant):
Tygon  [Team Member]
10/1/2011 8:09:45 PM EST
Thank you gentleman for the info!
BravoMan5632  [Member]
10/2/2011 5:05:23 AM EST
You know you could just paint it OD green and save the $$$....
StonerAR10  [Member]
10/3/2011 6:59:18 PM EST
Thank You Darith

I've often wished someone would post a way to tell what type of stock is Mil Spec and how to identify it. Does this mean that all Mil Spec tubes are four position and COmm ar six?
StonerAR10  [Member]
10/3/2011 7:00:17 PM EST
Thank You Darith

I've often wished someone would post a way to tell what type of stock is Mil Spec and how to identify it. Does this mean that all Mil Spec tubes are four position and COmm ar six? I guess the one I purchasde was a Comm stock by mistake.
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