This is the MDT Mag Loader for AICS magazines, a dedicated thumb assist loader for AICS short action mags.
The large surface area and spring actuated loader allows you to push down a round and load another on top with a fraction of the finger pressure used for manual loading.
Great for cold fingers or shooters with arthritis it's a welcome addition to the winter range bag.
Tested and proven with .223 and .308 family cartridges.
Now in MDT high visibility green only, to avoid loss in the darkest range bags.