Collection: Glock 21 Holsters for Concealed & Open Carry

The Glock 21 delivers .45 ACP stopping power with a full-size frame, and it demands a holster that handles both bulk and recoil without compromise. Alien Gear holsters for Glock 21 are engineered for heavy-duty performance—whether you're carrying concealed, patrolling with a duty belt, or running drills at the range. Each holster offers custom-molded retention, rugged materials, and multiple carry configurations to match your needs. From OWB tactical setups to IWB concealed carry options, these holsters keep your Glock 21 secure and accessible without sacrificing comfort.

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