I'm a gun dealer and have no problems with getting the M&P 15-22. Most of my distributors have them in stock and I usually get them within a day or two from when I order them. But then again, I live in the great nation of Texas.......LOL
No problem with it holding up. I have other guns that have been Duracoated for over 5 years that still look the same as the day ther were painted. The trick it to let the gun cure for 6 to 8 weeks before shooting.