A simple solution if it doesn't fit in your adjustable stock would be to switch to a fixed full stock but if you're not a fan of a fixed stock you could always convert to front wired and put it into the handguard.
This is an excellent battery. My rifle is rear wired and the only problem is that it doesn't fit in my stock. It is just barely too big. I was wondering if anyone knew how to fix this, such as a good stock that was larger than normal ones