So over at uzitalk there is a UT member discount for the Bazooka Bros adapter through April 12th.

Combine that with the drum and winder from E&L.. 275rds of .22lr goodness through your m11/22 or max11/22

Strobo summed it up:
You need to order the winder and drums from E&L Mfg. If you pay with a MO you can get a 15% cash discount.
$75.00 for the winder
$75.00 for the 165 drum
-22.50 for cash discount
+$12.00 shipping
$139.50

BB drum adapter + shipping for UT members
$177.95

Total=$317.45