You may have already tracked one down. but talk with George Talia at migunslingers.com. He has one in stock. Here are the specs from his website:

DTA SRS (A1)
The A1 Chassis has the adjustable cheek piece, soft buttstock, and thinner, lighter rail system
.308 22" Threaded barrel with thread protector
Black and FDE
Built in Monopod
2 magazines
DTA Operator Toolkit
DTA SRS Muzzle Brake Assy, 308WIN, QD


Rifle length with .308 Win 22" Barrel: 32 ½"- 34"
Match grade (free-floated) barrels, chambers, and crowns
High quality match trigger
Solid, repeating return-to-zero barrel mounting system (the receiver securely clamps around the first six inches of barrel)