I got it out of a blue engram... The first perk is Return To Sender- Kills with this weapon grant bonus ammo, directly to the magazine. on the perk tree is Increase ammo capacity- fking awesome the third perk is Mulligan- shots that miss the target have a chance to return directly to the magazine. the reason im posting this is because im hyped and really love this weapon version. if you have this weapon do you like it? the version of this weapon sold by the Vanguard Quartermaster doesnt interest me.