Fulcrum finds the 3D Printed Sabre HPA Conversion Kit for the VSR-10 makes it even quieter... "Recently I wanted to revive our knackered old JG BAR-10 into a MONSTER airsoft sniper rifle. And one thing I've had on my mind for ages was a 3D-Printed VSR-10 HPA conversion kit with an airsoft HPA engine that can be installed with relative ease. Changing a spring powered airsoft VSR sniper rifle into a very quiet and easy to use airsoft HPA sniper rifle.