Where to put that spare battery for your optics?

[Charlie-2-6]

So you have that brand, spanking new EVO and you put an Aimpoint or any other RDS on it that uses a CR2032 battery.
As you know, batteries die on you at the most inopportune moment, thus you take a spare on along.
But where to put it, if your sight doesn't have a raised mount ala LaRue T1 mount.

Simple, the EVO comes with its own little battery compartment 

[armoredman]

Hey, if it works, and it doesn't interfere with anything...I did ask CZ about a kit to put some sort of cover on the pistol grip. HUGE wasted space going on in there.

[TITAN308]

I am hoping a company like Magpul will eventually make an entire replacement for the pistol grip.