ATRS MS vs Sterling arms

[Chatrbaz84]

Hi everyone , does anyone know if sterling upper is compatible with MS ?
I know as a fact the hardness of materials are different but I do not know if in measurement is the same or compatible .

 

[Lorne125]

My “friend” has both. They fit but havn’t actually fired the mix match because ones built in 5.56 & the other in 6.5 grendel. Running different buffer weights.

Sterling Pro’s:
Lighter

MS Pro’s:
Better Machining (IMO)
Better Finish
It’s from ATRS
Tighter Fit, absolutely no play between receivers.

 

[Taurkon]

Hi everyone , does anyone know if sterling upper is compatible with MS ?
I know as a fact the hardness of materials are different but I do not know if in measurement is the same or compatible .

They fit, I have both and and fired them interchangeably.

 

[rally guy]

Some people would be lucky to have one or the other, some are really and have both! Jealous!

 

[J.Hancock]

If the fit isn't snug, the SAI will likely wear down on the ATRS due to metal hardness.

 

[williamteichroeb]

Sorry to revive this old thread. A “friend” of mine has an ATRS upper and was wondering if he could get a SAI TSR lower to be able to use the upper at the range. Can anyone confirm they fit and function well together?

 

[Bman12456]

Sorry to revive this old thread. A “friend” of mine has an ATRS upper and was wondering if he could get a SAI TSR lower to be able to use the upper at the range. Can anyone confirm they fit and function well together?

The SAI is a clone of the ATRS. Should be cross compatible

 

[no-one special]

Hi everyone , does anyone know if sterling upper is compatible with MS ?
I know as a fact the hardness of materials are different but I do not know if in measurement is the same or compatible .

Being as it is a rip off model of the ATRS receiver, yes it will fit, just nowhere near the same quality as the original.

 

[williamteichroeb]

Thank you gents!