Custom KYDEX® Holsters for the Glock 21
The Glock 21 is thirteen rounds of .45 ACP in a service-size frame — the full-size .45 that’s armed agencies and home defenders alike for three decades. ANR Design builds custom KYDEX® Glock 21 holsters precision-formed in Manchester, NH with separate dedicated shells for Gen 2–4 (including the 21SF) and Gen 5, molded to the generation you own. Around twenty weapon-light fitments cover the railed frame, from the TLR-1 through the Surefire X300 series. Carry it IWB with a full concealment claw setup or in the Nidhogg OWB. Configure yours below — priced and lead-timed live as you build.
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Glock 21 Fitment — Gen 2–4 vs Gen 5
We mold the Glock 21 on two dedicated shells: one for Gen 2–4 — which also covers the 21SF and the 10mm Glock 20 of those generations — and a separate one for Gen 5, formed on the fifth generation’s revised geometry. Select your generation in the builder and retention locks on your actual pistol.
Every Glock 21 holster ships optics-ready for slide-mounted red dots and clears suppressor-height sights as standard.
Carry Options for the Glock 21
Inside the Waistband (IWB): A full-size .45 conceals better than its reputation, and our IWB rig does the work — in-house concealment claw, your choice of injection-molded clips, heat-treated DCC Monoblock steel, or the NeoMag Alias system, with ride height and cant adjustment.
Light-Bearing: Around twenty molded light fitments, including the Streamlight TLR-1, TLR-2, and TLR-7 series, the Surefire X300U-A & B, XC-series, and XVL2, Modlite PL350, Inforce, Olight, and Sig Foxtrot lights — the classic home-defense .45-and-light setup, molded as one unit.
Nidhogg OWB: The same generation-correct fitments and light catalog outside the waistband — range days, working carry, or duty-style configurations.
Spare Magazines: The Glock large-frame .45/10mm magazines have a dedicated fitment in our Pistol Mag builder.
Frequently Asked Questions
Will this holster fit my Glock 21SF?
Yes — the 21SF’s slimmer grip doesn’t change the slide and frame geometry a holster molds around, and it’s covered on our Gen 2–4 shell.
Will a Gen 4 Glock 21 holster fit a Gen 5?
No — the Gen 5 large-frame models changed dimensionally, so we mold separate dedicated shells for Gen 2–4 and Gen 5. Select your generation in the builder.
Can I get a light-bearing Glock 21 holster?
Yes — around twenty molded fitments from the TLR-1 through the Surefire X300 series. Select your exact light in the builder and the shell is molded to that combination.
Can I get a left-handed Glock 21 holster?
Yes — left-hand builds are fully supported and made to order. The builder shows the exact lead time before you order.
What warranty comes with a Glock 21 holster?
Every ANR Design holster includes a free Lifetime Warranty on the KYDEX® shell for the original purchaser — automatic on every order, no registration.