M1903A4 sniper rifle

The M1903A4 Sniper rifle (simply called the "Sniper rifle") is a bolt-action sniper rifle featured in Call of Duty: Sino-War. It is the main sniper rifle used by the United States Army in the campaign.

Call of Duty: Sino-War
"A variant of the Springfield rifle, developed in 1942. The M1903A4 sniper rifle is equipped with a 4x scope. As a bolt-action weapon, it has a slow rate of fire and reloads one round at a time."

- Call of Duty: Sino-War manual description

Campaign
The M1903A4 Sniper rifle is the American choice of the sniper rifle. Mostly likely never to be found without a scope, and is so far the only American bolt-action rifle. It is also a one shot kill making it useful for clearing out groups of enemies.

Multiplayer
The Weapon is most likely to appear as a multilayer weapon as a weapon choice for the American team