I just noticed this in Operation: Seraph's Shield that Hakke Breach Armaments is not working on turrets, there is no damage increase. My Disparity pulse rifle does 339 damage per hit on the turrets without Hakke Breach Armaments and 339 with the perk selected. Same on the new Dawning Cold Front version: 329 with and without this perk. Haven't tested it against vehicles, barricades or stasis crystals yet.