I recently purchased a Leupold 3-9x40mm Tactical Mil-Dot from SWFA. After I added the scope to my cart, the screen asked if I needed flip up caps, killflash, lens pen, etc. Instead of having to look up and order the right product numbers, the selections were tailored to the specific scope. I ordered flip up caps, killflash, and a lens pen...it was all very quick and bombproof. I placed the order late on Monday night, I was mounting the scope to my rifle on Thursday afternoon!
And this was with UPS ground service! SWFA is where I will be getting my glass from from now on.