Black Friday and they will have random, intermittent sales with no timing, rhyme, or reason. And sometimes the sales are for just accessories, or just "soft goods" (sleeping bags, LPP, etc), or I've seen one for Sawtooth shelters before. So you would pretty much just be waiting and hoping on a sale before you needed to buy them.
They do have a discount code if you are military, police, fire, first responder, or a guide/outfitter. If that applies to you then email their customer service and they give you the code when you provide the necessary documentation.