Interesting. looks more like it fits in the assault rifle or battle rifle category.
Changing scope might make it fit the category better
and the ironsight might be slightly redundant, considering that the designation 'sniper rifle' would normally always rely on high powered scope.
Also small functional problem
You either need to move the magazine slightly more forward, or make more room behind the magazine. otherwise, the bolt carrier doesn't have any room to cycle the round
other than that, beautifully rendered