"A master of the one-shot kill, the bolt-action MSR deals exceptionally high damage from exceptionally far distances. Paced shooting and an even-tempered approach ensures any MSR sharpshooter success no matter the range."
The MSR is the last sniper rifle unlocked, at level 66.
A major thing to note is that the MSR is statistically similar to the L118A in almost every way. They have the same base damage, magazine size, and multipliers. The only differences are the unlock times, as the L118A is unlocked with Create-a-Class, whereas the MSR must be unlocked at level 66. As well, the MSR cycles the bolt and reloads faster, and thus, has a higher rate of fire and reload time over the L118A. It also has a larger/ more circular scope than the L118A, giving more peripheral vision during ADS. Due to these simple facts, many players that have it unlocked would choose the MSR.
Due to the aforementioned strengths of the MSR, it is much more suited towards aggressive sniping, where it is more forgiving when the enemy is missed or shot in the limbs, and that less time is required to reload. Its popularity online is reflected upon by several players, as its simple-but-deadly statistics allow a good wielder to dominate the battleground with relative ease.
The MSR is available in Survival Mode at level 7, it is the first sniper available, and costs $2000. The MSR is a good choice for the early rounds as its high damage and relatively low recoil make it easy to pick off enemies. However, it is advised to replace this weapon when heavy troops appear as it can no longer kill with a single shot.