Some manufactures will use whatever chamber you choose. For example Satern/Liberty barrels use Grendel II but you can order a cut rifled barrel from Satern with SAAMI chamber. At one time Black Hole Weaponry offered to use either .125 bolt face depth or .136. BHW since changed to only offereing .125 for financial reasons. JSE Surplus was selling some SAAMI 6.5 Grendel barrels chambered to use .125 bolts which adds further confusion.
Here are a few SAAMI Manufactures that come to mind. Some vendors sell house brands like Midway who source barrels from other Manufacture like BCA or Satern/Liberty used by Brownell’s. Manufactures like Wilson Arms, Shaw, Green Mountain Ballistic Advantage, Odin Works and Faxon all sell barrels to vendors and the vendor might or might not disclose the source of barrel. Barrel manufacturer will produce barrels to vendors spec and many times have Non Disclosure Agreements.
Lilja
Shilen
Rock Creek
Precision Firearms
Alexander Arms
T-Box
JP Enterprise
LaRue Tactical
Hardened Arms
McGowen
Proof Research
Christensen Arms
J&T Distributing/Double Star
Olympic Arms (currently out of business)
Sabre Defense(currently out of business)
CMMG
Odin Works
Faxon
Ballistic Advantage
Anderson Manufacturing current production
A R Stoner Midway USA current production
Bear Creek Arsenal
Wilson Arms
JSE Surplus
Core
Shaw
BSF carbon fiber rapped 5R
Sheepdog Gunworks
X-Caliber does SAAMI & 264 LBC
Wolf Performance Arms
Variant Chambers
Les Baer 264 LBC
Model 1 Sales 6.5 Sporter
Lothar Walther 6.5 CSS
Anderson Grendel 1 out of production
Black Hole Weaponry/Columbia River Arms, 264 LBC
Satern/Liberty Grendel II
I’m sure there might be others but this gives an idea of availability.
There are a few custom barrel makers who buy barrel blanks and finish the barrel to the Customers specification. Precision Firearms offers several different manufactures barrel blanks. It makes it difficult to list because some vendors offer so many options.
Here are a few SAAMI Manufactures that come to mind. Some vendors sell house brands like Midway who source barrels from other Manufacture like BCA or Satern/Liberty used by Brownell’s. Manufactures like Wilson Arms, Shaw, Green Mountain Ballistic Advantage, Odin Works and Faxon all sell barrels to vendors and the vendor might or might not disclose the source of barrel. Barrel manufacturer will produce barrels to vendors spec and many times have Non Disclosure Agreements.
Lilja
Shilen
Rock Creek
Precision Firearms
Alexander Arms
T-Box
JP Enterprise
LaRue Tactical
Hardened Arms
McGowen
Proof Research
Christensen Arms
J&T Distributing/Double Star
Olympic Arms (currently out of business)
Sabre Defense(currently out of business)
CMMG
Odin Works
Faxon
Ballistic Advantage
Anderson Manufacturing current production
A R Stoner Midway USA current production
Bear Creek Arsenal
Wilson Arms
JSE Surplus
Core
Shaw
BSF carbon fiber rapped 5R
Sheepdog Gunworks
X-Caliber does SAAMI & 264 LBC
Wolf Performance Arms
Variant Chambers
Les Baer 264 LBC
Model 1 Sales 6.5 Sporter
Lothar Walther 6.5 CSS
Anderson Grendel 1 out of production
Black Hole Weaponry/Columbia River Arms, 264 LBC
Satern/Liberty Grendel II
I’m sure there might be others but this gives an idea of availability.
There are a few custom barrel makers who buy barrel blanks and finish the barrel to the Customers specification. Precision Firearms offers several different manufactures barrel blanks. It makes it difficult to list because some vendors offer so many options.