This kit is the old Esci (also boxed by AMT/Ertl) kit and could be found with the calliope rocket launcher as well. Eduard makes a PE set, but it is designed for the Monogram/Matchbox M4A1 (both were the same kit, one issued in green the other in white).
It is a very nice kit although the hatches are fairly thick for 1/72 scale. Extratech may make some PE for it, I do not know.
As far as part removal, in better hobby stores, they have razor saw blades that fit into X-Acto knife handles that are good for trimming parts from sprue. There are also several sprue nippers that www.micromark.com sells that are superb for removing tiny parts.
Verlinden makes a modern 1/72 scale stowage set that is designed for the RoG M2A2 Bradley. At this scale, a rucksack is a rucksack so you should be OK.