The book is ok, but if it gets published the same as it is in the PDF you might be better off waiting until the second printing. There are lots of little errors and some of the charts are missing entries.
There are also things like not telling you which skill Battle Rifles use. Technically they are Sporting Rifles with larger ammo capacity and burst fire (which is what a battle rifle is IRL also). In my game, I'm going to go with the Long Arms skill for them, until a change to the PDF comes out.
The addition of AP Flechette ammo adds an interesting twist to my game, since I actually have players who use shotguns for the spread effect of shot rounds on unarmored/lightly armored targets. Have to figure out how this will effect the varies spread settings on a shotgun, but most likely I'll go with reducing the stated ap modifier by 5 (Narrow +2DV, +0 AP/Medium +0DV, +2AP/Wide -2DV, +4AP). A full-auto shotgun, combined with a smartlink to change the choke on the fly, and ap shot would work wonders for clearing out mass fleshy targets. Think I'll cut AP Shot rounds price to half that of AP flechettes. This will make them far more expensive than normal shot rounds ($8 a round rather than $2 a round).