Save your fingers and magazines! Simply attach the LULA on top of any AR-15, M-4 Carbine, or M-16 .223 Rem or 5.56x45 magazine and easily load AND unload loose rounds. When we saw it in action, we knew that we had to have them! Simply click it onto the mag and work the lever back and forth. It's really that easy! It's lightweight (1.3 oz.) and pocket size and has only two parts. Fits all 5.56 & .223 AR15 & M4 carbine polymer and metal magazines including but not limited to: Magpul, Lancer, C Products, Dura Mag, Thermold, Beta, Orlite, Colt, G.I. etc. Already in use by the Israeli Military and under evaluation to add to the U.S. Military SOPMOD kit. ""Purchased one.......Wonderful accessory/works great! Will be ordering more for my shooting partners soon."" Bravo 5-2 Jon Kenneth, The I.S. Group Inc.