I have just discovered this site and heard of this gun. It looks really good, kind of a cross between a HK and an AR. What is the advantage of this over an AR or Fal and others. How about parts. One thing I really like about an AR is that there are tons of parts makers out there. I actually like precision bolts more than the rest but I love shootin AKs,FALs,Ars and my faverite M1A. The XCR looks real nice but how do they stack up to some of the others. Thanks much.