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Mfg Item #: GLK-A14
The ProMag Glock Model 21 .45 ACP 13 Round Magazine fits Glock Model 21 and 30 .45 ACP. The magazine body is constructed of a proprietary DuPont Zytel based polymer with a full length steel internal insert stamped and welded like the factory magazine. It also has an injection molded magazine follower. The spring is made from heat treated chrome silicon wire. This magazine is made in the USA.