This is the Games Workshop Adepta Sororitas Paragon Warsuit set 52-34

The kit is comprised of 179 plastic components, with which you can assemble three Paragon Warsuits, and is supplied with 3x Citadel 50mm Round Bases. This kit includes options to equip the warsuits with two different melee weapons, three different ranged weapons, two different carapace weapons, and includes helmeted and unhelmeted head options.