AR15.Com Archives
 Sig 516 Patrol rifle buttstock
Tygon  [Team Member]
9/24/2011 7:26:35 PM EDT
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 3:20:26 PM EDT
It must be commercial because I bought a Mil Spce Mag Pull and it fit to tight.
C_Swimm  [Team Member]
9/26/2011 10:37:22 AM EDT
Mine came with a Mil-Spec buffer tuber.
Darith  [Member]
10/1/2011 1:06:30 AM EDT
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 9:09:45 PM EDT
Thank you gentleman for the info!
BravoMan5632  [Member]
10/2/2011 6:05:23 AM EDT
You know you could just paint it OD green and save the $$$....
StonerAR10  [Member]
10/3/2011 7:59:18 PM EDT
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 8:00:17 PM EDT
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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