The FNAR uses the SPORTING BAR, not the Browning Automatic Rifle (machinegun) lineage.
Of the two......i'd pick neither, I'd get a SCAR 17 or an OBR and accept the price difference because they're accurate and they work.
"And Shepherds we shall be. For thee, my Lord for thee. Power hath descended forth from thy hand, that our feet may swiftly carry out thy command. So we shall flow a river forth to thee and teeming with souls shall it ever be. In nomine Patris, et fili, et Spiritus Sancti. Amen."