Exactly What I Need for My AR-308

I love my AR in .308 but it has one limitation; the 20-round magazines make it slightly harder to blow through an entire bank account during one range drip. Apparently XS saw the blight of AR-308 owners and is offering a ridiculously awesome solution:

Serious firepower in a small package. The X-25 is a .308 caliber 50 round single stack compact drum designed for AR .308 SR/25 rifles.

Now if they would just make a 100-round version of this.