How do lock boxes work exactly?

[GiantInMaine]

So does this bonus loot weekend up the lock boxes as well?

No it doesn't.

[BunnyKiller]

No it doesn't.

Of course not

[PowThePredat0r]

I've never gotten anything from a T4 after spending close to 7-800 keycodes (I keep track of what I get from lockboxes).

My only oranges have came T3 (7) and T2 (4). I spent 400k ark salvage before the 1 hour downtime and got 2 oranges at my 15th/16th box so I'm guessing you get an orange every 15th/16th box form T3?

You may have better luck than me though so who knows!

[SxB_xPUDDYTATx]

Each lockbox has the same chance at a legendary... even the Tier 2.. but whats unique is the are the chances at a legendary..basically

Tier 2 Lockbox = 2 Items of at least Uncommon(Green) = 2 chances at a Legendary (Very Low Percentage) for 8 Keycodes.
Tier 3 Lockbox = 3 Items of at least Uncommon(Green) = 3 chances at a Legendary (Very Low Percentage) for 24 Keycodes.
Tier 4 Lockbox = 4 Items of at least Uncommon(Green) = 4 chances at a Legendary (Very Low Percentage) for 64 Keycodes.

If you bought any one of these Lockboxes ALONE. not accounting for COST, the t4 has the greatest chance at dropping an Orange than the previous tiers... but, the most cost effective imho is to purchase the t2 boxes in BULK.

Here's some math to show what I mean.

You have 64 Keycodes... you do 1 of 3 things.

A)Buy 1 tier 4 lockbox and get 4 chances at a Legendary (4 items in the lockbox, each with the same chance to be Legendary)
B)Buy 2 Tier 3 Lockboxes and 2 Tier 2 Lockbox for 10 chances at a Legendary ( 6[3x2] from the Tier 3, and [2x2] from the Tier 2)
C)Buy 8 Tier 2 Lockboxes and get 16 chances at a Legendary (2 items per Tier 2 Lockbox)

So, it's my honest belief that buying Tier 2's in bulk will yield a great chance at Legendaries for less Keys over all.

I love this breakdown, and I would like to ask on question just for clarification. ive seen multiple threads on how the drop rate raises from .02 to ,07 or something like that buy buying tier 4 vs tier 2. but does that mean per weapon? or per drop box?