User blog comment:B214/Question and Answers 6/@comment-207.242.44.6-20181113203303/@comment-10330822-20190111010507

No, I'm sorry, I never meant to imply that. I'm saying Issei is using a similar concept thanks to Ophis being able to add or remove infinity at her choosing, allowing Issei to adapt to its full power over time, it in fact has very little to do with the Sacred Gear itself.

The Artifical Sacred Gears are the only known devices we know that can do this by its own design. That being said, you could just make an artifical replication of an existing sacred gear, which is what Ex's Boosted Gear Diabolus is, an artifical replication of Issei's Boosted Gear.

So, hypothetically, you could get a Counter-Balance for a Sacred Gear this way. Allowing users not as strong as the actual owner a chance to use some of its power to whatever degree they can handle.

To be honest, the mechanic is genius, because logically, these Artifical Sacred Gears are for mass production. You can make multiple and give them to various soldiers of various levels of skill, so the Counter-Balance can safeguard against someone with less than ideal compatibility who might never be able to use Balance Breaker.