In the US, I'll plug http://www.internationalwatchman.com/ , look under military straps. I just recently ordered a few 20mm & 22mm UTC ZULUS & NATOS. $10 each and flat rate $6 shipping. Foxglove on WUS did a review comparing their zulu to Maratac. Excellent hardware and stitching, nice thick nylon. The thing I like about his NATO style is that it uses the same material and hardware as the zulus, nice and thick. There's no online cart but just give them a call, fast shipping to boot.