When it comes to capacity, fifty is nifty, so grab one of these ProMagA(R) Drum Mags for your Glock 48 or 43X and have a blast at the range. Quality-made from ZytelA(R) polymer, with full-length steel insert and injection-molded follower. Fits the Glock 48 and 43X pistols Rugged black Zytel polymer body Full-length steel insert Heat-treated stainless steel spring Made in USA Order today!