Factory Glock 21,21SF,41 45 ACP 13rd Magazine
Factory Glock 21,21SF,41 45 ACP 13rd Magazine
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High Capacity Factory Glock Mag for Models 21,21SF,41 .45 ACP, 13rds

With some of the worlds most rigorous testing, Glock  has a well-earned reputation for quality.  Keep your Glock running with these factory original Glock manufactured magazines, especially if  you use your pistol for duty or self defense. You buy a Glock for reliability, that goes for the magazines too. 
Numbered witness holes on the back allow for an easy round count. The anti-tilt follower keeps the cartridges at  the proper feed angle and avoids nose-diving. The polymer body is fully reinforced with steel liner for strength and durability. When it comes to magazines, overbuilt is not a bad thing!
These fit flush in the full size  frame .45ACP Glocks.....G21, G21SF, and G41. They will also fit the subcompact Glock .45ACP pistols (G30, G30SF) but will  not fit flush.

Always follow State and Local Restrictions. See Restrictions Here