For affordable quality, ProMag is always right on the mark. If you want extra capacity for your G48 or G43X, look no further. Fits the Glock 48 & 43X 30-round Drum Magazine Drum housing is made from Zytel polymer Magazine upper tower has an overmolded, heat-treated carbon steel feed lip Injection-molded polymer follower Heat-treated stainless steel spring Made in USA Order today!