Load the CMMG 22 conversion magazines LIGHTNING Fast With the McFadden Lightnin Grip Loader. Drop up to 50 rounds of 22lr into the hopper. Close the lid. Shake the loader to get ammo into the channel. Insert the CMMG conversion magazine, and pull the trigger on the loader. McFadden Lightnin loaders must use a magazine adapter, and other types are available direct from McFadden. We ship this one with the adapter (#2) that is designed for use with either the gen 1 or gen 2 conversion magazines.