Savage Arms is the latest firm to announced that have adopted the .300 AAC BLK. Along with .223 Rem. and .308 Win they are chambering the Model 10 Precision Carbine in .300 AAC BLK. The Precision Carbine is part of their Law Enforcement line of rifles. I have never thought of the .300 BLK as a law enforcement sniper cartridge, but there is no reason it could not be employed in this role. I do think it would make a decent hunting cartridge for small deer and hogs.
They have not yet released all the specs, but the MSRP will be $899.