A few things that were omitted from the movie:
B & B Guns also supplied the LAPD with Remington 1187
Police model shotguns (18" barrels and +2 mag extesions)
with slugs.
One of the LAPD officers liked the ARs/Bushmaster he
used that he wanted to buy it from B&B (don't know if he
did, but that would make a nice line).
All the ARs/Bushmasters in the movie are pre-94 (they
have collapsible stocks, flash suppressors and bayonet
lugs) when the ones in reality were post 94s.
B&B guns donated the firearms used to SOF to be
auctioned off for a fund to help injured LAPD officers
(they raised something in the neighborhood of $6000)
I also noted that the police did not have "assault rifles", only the criminals (as it was mentioned throughout the movie). And, as a result of the robbery/shootout, the LAPD (as well as other qualifying departments in the U.S.) have received M16 "machine guns" from the DoD, and not "assault rifles" to help them combat upgunned criminals.
I do have one question to fellow viewers: Was there also some sort of commentary by one of the officers or detectives involved that "the type of guns that they (the robbers) had could be owned by someone you know, in the car next to you, and maybe even by your next-door neighbor"? I was not certain if I heard a statement like that, but it certainly is unfriendly to gunowners.
Another thought: The slow motion shots of the robbers firing full-auto can be handily mistaken as rapid semiautomatic fire by the unknowing. It may be an appealing technique of cinematography, but also untruthful.