I went there for the first time last week after they posted here about their Leupold sale. Nice little store, packed to the rafters with ARs, ammo, silencers, JP, Magpul, even LaRue stuff - a tacticool dream. Quick, friendly, professional service - the guy at the register, Matt, gave a friendly "Hi!" to everyone who entered the store. It was clear that they're greateful for retail customers and make them feel welcomed. I ended up getting a Leupold CQ/T at a shockingly good price. Surprisingly, they had the LaRue mount in stock, so I had it up and shooting the same day.
I remembered seeing a couple of boxes full of tiny pins, springs, and detents for AR rifles - nice to know they're there on short notice.
Yesterday, I needed a detent spring that I smashed while switching stocks, and I went back to MachineGun Tours to pick one up. This time, the man at the register, RW (I think that's his name), could not have been more helpful. Found the spring I needed, asked a bunch of questions to make sure that is the right one (even though I knew it was), had me show it to him on an AR rifle, THEN, he dragged some AR-build guru from the back of the store to verify that they're sending me home with the correct spring. The dude really had my back on this one. All this service for a 75 cent spring!
Great service, great inventory! The only unsolicited suggestion that I have for them is to get rid of the display of machine guns that are on the floor in the middle of the store - it is a major trip hazard and it makes their already small space feel cramped instead of cozy. The mellow dog laying around is a nice touch, though. :-)
I'm not affiliated with the store, owners, or employees. Just a very happy customer!