5D Tactical AR10 fits who's uppers?

[Gunnersmate]

I have a 5D Tactical AR10 lower that has been finished and has a serial number issued to it and all the other bs needed for the Feds from a block of numbers submitted for my builds.
My question is, Who's uppers fit the best for this lower? I tried to call 5D Tactical to no avail as well as several "upper" manufactures with "you must use ours" as the answers. Someone posted it may be DPMS type? I can measure the pin holes if needed.
I'm sure there are members here who have built an AR10 type rifle using this lower.
*I'm not a new member, just changed my email and could not sign in any longer. Used to be Rapidrob.
Thank you for any helpful info.

*I am President of New Mexico Military Surplus Rifle Pistol Shooters where we hold matches every week from 200 meters to 1000 yards using surplus military rifles from around the world.

 

[bfoosh006]

Was this a 80% lower ?
I don't see a complete lower for sale at their webpage.
None the less... for the 80% lowers... and quoted from their webpage.
"Our AR10/AR308 lowers will work with ANY DPMS Gen 1 pattern upper receivers like those sold by Aero Precision or CMMG. It will not work with patterns made by KAC or PSA."

 

[Gunnersmate]

Thank you for the info bfoosh006.
I would like to finish the rifle as a clone US Navy SR25 or the Mark II Mod O type rifle.