The LULA loaders & unloaders are military-quality rifle magazine loaders and unloaders for double-stacked magazines. They facilitate both loading of loose rounds into a magazine and unloading them out of the magazine. They do so fast, safely, comfortably, painlessly, and reliably. Usable for tens-of-thousands rounds. Specifications: - Colt SMG LULA loader and unloader for 9 x 19mm original Colt SMG mags, and modified UZI mags. Made to exact specs.