The stock is a Magpul M93 modular stock, pricey but I've been very pleased with it - it is like a fixed stock that can be adjusted and I love the presets on it that allow me to go from collapsed to right where I want it quickly.
The pistol grip is a Sierra Precision grip. If you are right handed and don't shoot from your weak-side much, it is a great grip. Otherwise, the thumb shelf on the left side can be a pain and it isn't for people with small hands as it has a good-sized palm swell and extra plastic on the right to push your trigger finger out to a distance that I feel works a bit better for me than most AR grips which leave me able to stick my finger through the trigger guard all the way up to my knuckle.