A friend of mine bought a 870 from wilson combat and it seems very nice but it is built on an express model not a police magnum and has a MIM extractor and the plastic triggerguard. I would have thought for that money it would be a police magnum as a foundation for a 1400.00 shotgun. Are they worth the money or is an 870 police with a surefire pump and speedfeed stock just as good for 700.00 less?