Noveske BCGs are only marked MP. With that said, those who usually buy Noveske, generally run their rifles pretty hard, so you should not have any problems with their BCG.
Edit to add: Noveske does not just blindly throw BCGs into their rifles and uppers. They actually test fire each 5.56mm rifle and upper with Black Hills Ammunition before it leaves their factory.
Their is a relatively new company making rifles and components that has all the bells and whistles to their BCG, that may interest you. SIONICS Weapon Systems is based out of Arizona and they are bringing to market some high quality stuff at pretty reasonable prices. You can check them out at http://www.sionicsweaponsystems.com/
here are the BCG details:
100% HPT & MPI
Heavy Extractor Spring
Black Insert and O-Ring
Nickel PTFE Carrier
SIONICS bolts are made by a current defense contractor from Carpenter 158® Steel. The bolts are 100% high pressure tested and magnetic particle inspected. Each bolt is shot peened and comes with a heavy extractor spring, black spring insert and O-Ring.
SIONICS bolt carriers are also manufactured by a current defense contractor. Only M16 bolt carriers are used. The keys are checked for a flat fit before being installed and the bolts are side staked.
Each carrier assembly is treated with a durable Nickel/PTFE plating which creates a permanently lubricious surface which eliminates the need for grease, oil or any wet lubrication.