The BSW 77 is a bolt-action sniper rifle sporting slightly higher accuracy than IMP-S (albeit lacking the latter's unique explosive rounds). Along with the IMP-S, its damage is unparalleled within the sniper rifle category, and can even one-shot kill the legs with higher-tier muzzles, making the BSW one of the deadliest weapons in the game for long-range combat. With the Hip Fire skill and crouching, the BSW can even repel close-range attackers effectively (particularly with a silencer for improved accuracy), however, missing a shot will prove to be troublesome. The BSW also has a large magazine capacity, making reloads a rare occurrence, and reloads are also fairly swift.
Overall, the BSW 77 is a very powerful rifle, excelling at eliminating enemies at a single shot and at engaging enemies at a long-range.
The BSW 77's appearance in its combat card lacks a scope. Also, when the player is killed by a user with the BSW, the scope is not found on the weapon during kill cam while they are running with it/walking with it. However, when the user scopes in with the BSW, the scope appears.
There was a big change to the BSW's design after the forth update of Modern Combat 5. After the update, the BSW 77 now has a pistol grip and has its shoulder stock raised up to give it a more modern look.