Bought a brand new ,in the box M&P 15, 4 -10 round Magpul mags, out of california for 500.00 plus tax and shipping,,575.00 total. Bought a mag release assy. From Midwayusa, took about 30 minutes to get rid of the “bullet button”. How did the left coast ever come up with such a thing? Put on a holosun red dot, military sling, it shoots great! California is a good place to buy rifles from!