Ordered my current project's barrel from NSS, could not be happier with the process. They were the only one to list my caliber of choice. I went with their nut and lug as well. Very nicely machined and good looking parts IMHO.
Ordered my Savage LA PT&G bottom metal on 20/06/20 and have yet to receive it or any communication saying when it will arrive. I knew that it would be like this going in, but I was not finding another option currently available for a long action.
LA seems to be the sticking point, lots more options for the Savage SA's. Magpul does make LA caliber AICS magazines. Anything based on the .284 case may want the .300WM magazine, not sure about that, but it's body size is closer to that of a magnum case body than it is to a '06 family case body size.
The only two options that I found for the stock shape that I wanted (wide, flat forearm, vertical pistol grip, & butt hook) were Boyd's and Stockade Stocks. Manners refuses to make anything for the Savage LA's because of the rear guard screw location. Their claim is that it results in a weak stock due to it going thru a bridge in the inletting. Which is a shame because it was their stock on a CZ 455 Varmint Precision Trainer that got me going in that direction in the first place.