The magazine loader was originally designed to load the (100) Rd .223 / 5.56 BETA magazine. The loader is slipped over any AR-15(R) / M16 .223 / 5.56 type magazine. Five cartridges are dropped in and loaded by depressing the plunger. The process is repeated until the magazine is loaded. Constructed of injection molded black polymer. FeaturesMagazine loader for AR-15 / M16 .223 / 5.56 type magazinesLoader is slipped over any AR-15 / M16 .223 / 5.56 type magazinesFive (5) cartridges are dropped in at a timeMagazine is loaded by depressing the plungerRepeat process until magazine is loadedMade of injection molded black polymer