I'm thinking about getting a Bushmaster Carbon 15 97S.  Anyone have experience with this rifle?  Is it reliable? (This is the most important question about any rifle, imo).  What's accuracy like?  I like the fact that it has backup irons and only weighs like 5 lbs.  I'm a little skeptical about the lack of a dust cover and no forward assist; but maybe it doesn't need 'em!!  So, if anyone out there has one, or has an opinion, lemme know!  Thanks.