Add Olsen Firearms in Cave Creek, AZ to the list and if you want LMT rifles or parts, I am recommending Titan Defense in Scottsdale although Russel does not have a physical storefront at this time. He is very detailed with his knowledge of LMT products and just a great guy.
Aaron at Olsen Firearms was quite a pleasure to work with as well and transferred my LMT. They had a great shop with a ton of high-end firearms and excellent customer service.