I use Red Chute Shotgun Club on base. That may or may not be helpful for you.
I will absolutely under any circumstances use DavTac. Total jackasses! The biscuit headed “Joey” guy in DavTac is a douche supreme and has a terrible attitude and is not very knowledgeable despite his claims.
I use Guns & Ammo, now Black Bayou Armory, on Kingston and Benton for all my NFA stuff. I’d use them if I couldn’t use the shotgun club on base.