The Lynx AMR is PUBG's first Anti-Materiel Rifle, a semi-automatic crate gun capable of damaging military equipment and armor, in addition to players and vehicles. Intended as a hard counter to vehicles, the Lynx is also effective in any situations you'd find yourself wanting to scope in and shoot down an enemy.
~ In-game description
Update #56 (Season 13 - Update 13.2)
Since the release of the Lynx AMR, low ammo capacity combined with the inability of players to access additional ammunition has limited the overall usefulness of the weapon. To make the Lynx AMR widely used in the battlegrounds, we have increased the ammo capacity.
Increased ammo capacity from 5 to 10.
Update #53 (Season 12 - Update 12.1)
PUBG's first .50 caliber weapon
The Lynx AMR is first and foremost the best anti-vehicle sniper rifle in the game, capable of destroying BRDMs and even penetrating the windows to kill its occupants.
Capable of destroying weak vehicles like motorcycles in a single shot and most regular vehicles in two or three shots.
Players have five shots only, with no way to reload.
Spawns in Care Package only on Miramar in Normal Matches. In a future update, the Lynx will be added to Custom Matches and Training Mode