Colloquial. Often hints at effort or even shady means — 'manage to get' rather than simple 'get'. Very common in 把-construction: 把 X 弄到手 ('get X into one's hands').
grammar
Structure: 弄 (do/handle) + 到手 ('arriving at the hand', a resultative complement). The same 到手 attaches to many verbs: 拿到手, 搞到手, 抢到手 — all meaning 'successfully get into hand'.
