The Glock 19 is one of the most widely carried and trusted 9mm pistols in the world, and finding the right magazine is essential to keeping it running reliably. At Botach Tactical, we stock a comprehensive selection of Glock 19 magazines — from factory OEM mags in standard 15-round capacity to extended 17-round, 33-round, and drum configurations — sourced from trusted brands including Glock, Magpul, ETS, KCI, and more.How to Choose the Right Glock 19 MagazineOEM vs. Aftermarket Glock 19 MagazinesFactory Glock OEM magazines are the gold standard for reliability. Built to the same tolerances as your pistol, they feed consistently and drop free without issue. Aftermarket options from Magpul (PMAG GL9), ETS, and KCI offer competitive alternatives at lower price points, with translucent or polymer bodies that allow round-counting at a glance. For duty or defensive use, OEM or Magpul PMAG magazines are the top recommendations; for range training and bulk practice, KCI and ETS provide solid value.Glock 19 Magazine Capacity OptionsThe Glock 19 ships with a standard 15-round magazine. For restricted states, 10-round compliant magazines are available from OEM and aftermarket makers. For competition or home defense, extended 17-round magazines (using a Glock 17 body with an adapter sleeve) and 33-round factory Glock magazines offer higher capacity. Drum magazines from ProMag and others provide 50-round capacity for range sessions.Generation Compatibility: Gen 3, Gen 4, and Gen 5Glock 19 magazines are largely cross-compatible across generations — Gen 3 and Gen 4 magazines are fully interchangeable. Gen 5 introduced a flared mag well and updated follower, but Gen 5 magazines also work in Gen 3 and Gen 4 pistols. Always verify the specific product listing for generation compatibility when ordering extended or specialty mags.Magazine Extensions and Base PadsMagazine extensions and base pads allow you to increase capacity or improve grip ergonomics. Popular options include Pearce Grip +2 extensions, Taran Tactical base pads, and Magpul GL9 enhanced magazine wells. Extensions that add 2–5 rounds are ideal for competition shooters; pinky extensions improve control for concealed carry without adding bulk.Magazine TypeCapacityBest ForNotable BrandsOEM Standard15 roundsDuty, EDC, Defensive carryGlock Factory10-Round Compliant10 roundsRestricted states (CA, NY, etc.)Glock OEM, Magpul, ETSExtended / 17-Round17 roundsCompetition, home defenseGlock 17 OEM w/ sleeve, ETSHigh-Capacity / 33-Round33 roundsRange, competition, home defenseGlock OEM, ETS, KCIDrum Magazine50 roundsRange training, fun shootingProMag, Glock-compatibleFrequently Asked QuestionsWhat is the standard Glock 19 magazine capacity?The Glock 19 comes standard with a 15-round magazine chambered in 9mm. This is the factory-specified capacity for the full-size compact frame. In states with magazine capacity restrictions such as California and New York, Glock also produces 10-round compliant magazines for the G19.Are Glock 17 and Glock 19 magazines interchangeable?Glock 17 magazines will fit and function in a Glock 19, but they will protrude below the grip due to the G17's longer magazine body. Glock 19 magazines will not fit in a Glock 17 because the G19 mag is shorter and will not lock in properly. Many G19 shooters use G17 magazines with an X-Grip or sleeve adapter for a flush, comfortable fit.Will Glock 17 magazines work in a Glock 19?Yes — Glock 17 17-round magazines will seat, lock, and feed reliably in a Glock 19. The magazine will extend below the grip by roughly 0.5 inches. This is a popular option for home defense or competition shooters who want higher capacity in their G19. A grip sleeve or X-Grip adapter fills the gap for a cleaner appearance.Are Glock 19 Gen 4 and Gen 5 magazines interchangeable?Yes, Glock 19 magazines are interchangeable across Gen 3, Gen 4, and Gen 5 pistols. Gen 5 magazines feature an updated follower and a slightly modified floor plate, but they function in earlier generation pistols. Older Gen 3 and Gen 4 magazines also work reliably in Gen 5 Glock 19 pistols.What extended magazines are available for the Glock 19?Extended magazine options for the Glock 19 include the factory Glock 33-round magazine, ETS 31-round translucent polymer magazines, KCI 33-round magazines, and ProMag 50-round drum magazines. For modest increases, magazine extensions from Pearce Grip (+2), Taran Tactical, Magpul, and ZEV Technologies can add 2–5 rounds to a standard 15-round mag.What is the difference between a Glock 19 and Glock 19X magazine?The Glock 19X uses a 17-round magazine — the same magazine body as the Glock 17 — because it pairs the G19 slide on a full-size G17 frame. Standard Glock 19 15-round magazines will fit the G19X but will not sit flush. Glock 19X 17-round magazines will fit and function in a standard Glock 19, extending below the grip.How many magazines does a Glock 19 come with?New Glock 19 pistols typically ship with two factory 15-round magazines, though some configurations include three magazines. Generation and package type may affect this — certain Gen 5 MOS and competition packages have included three magazines. Always verify with your dealer at the time of purchase.What is the best aftermarket Glock 19 magazine?The Magpul PMAG 15 GL9 is widely regarded as the top aftermarket Glock 19 magazine for reliability and value, offering performance comparable to OEM at a lower price. ETS magazines are a strong choice for translucent viewing and extended capacities. For duty or defensive use, factory Glock OEM magazines remain the benchmark recommendation.{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is the standard Glock 19 magazine capacity?","acceptedAnswer":{"@type":"Answer","text":"The Glock 19 comes standard with a 15-round magazine chambered in 9mm. This is the factory-specified capacity for the full-size compact frame. In states with magazine capacity restrictions such as California and New York, Glock also produces 10-round compliant magazines for the G19."}},{"@type":"Question","name":"Are Glock 17 and Glock 19 magazines interchangeable?","acceptedAnswer":{"@type":"Answer","text":"Glock 17 magazines will fit and function in a Glock 19, but they will protrude below the grip due to the G17's longer magazine body. Glock 19 magazines will not fit in a Glock 17 because the G19 mag is shorter and will not lock in properly. Many G19 shooters use G17 magazines with an X-Grip or sleeve adapter for a flush, comfortable fit."}},{"@type":"Question","name":"Will Glock 17 magazines work in a Glock 19?","acceptedAnswer":{"@type":"Answer","text":"Yes — Glock 17 17-round magazines will seat, lock, and feed reliably in a Glock 19. The magazine will extend below the grip by roughly 0.5 inches. This is a popular option for home defense or competition shooters who want higher capacity in their G19. A grip sleeve or X-Grip adapter fills the gap for a cleaner appearance."}},{"@type":"Question","name":"Are Glock 19 Gen 4 and Gen 5 magazines interchangeable?","acceptedAnswer":{"@type":"Answer","text":"Yes, Glock 19 magazines are interchangeable across Gen 3, Gen 4, and Gen 5 pistols. Gen 5 magazines feature an updated follower and a slightly modified floor plate, but they function in earlier generation pistols. Older Gen 3 and Gen 4 magazines also work reliably in Gen 5 Glock 19 pistols."}},{"@type":"Question","name":"What extended magazines are available for the Glock 19?","acceptedAnswer":{"@type":"Answer","text":"Extended magazine options for the Glock 19 include the factory Glock 33-round magazine, ETS 31-round translucent polymer magazines, KCI 33-round magazines, and ProMag 50-round drum magazines. For modest increases, magazine extensions from Pearce Grip (+2), Taran Tactical, Magpul, and ZEV Technologies can add 2–5 rounds to a standard 15-round mag."}},{"@type":"Question","name":"What is the difference between a Glock 19 and Glock 19X magazine?","acceptedAnswer":{"@type":"Answer","text":"The Glock 19X uses a 17-round magazine — the same magazine body as the Glock 17 — because it pairs the G19 slide on a full-size G17 frame. Standard Glock 19 15-round magazines will fit the G19X but will not sit flush. Glock 19X 17-round magazines will fit and function in a standard Glock 19, extending below the grip."}},{"@type":"Question","name":"How many magazines does a Glock 19 come with?","acceptedAnswer":{"@type":"Answer","text":"New Glock 19 pistols typically ship with two factory 15-round magazines, though some configurations include three magazines. Generation and package type may affect this — certain Gen 5 MOS and competition packages have included three magazines. Always verify with your dealer at the time of purchase."}},{"@type":"Question","name":"What is the best aftermarket Glock 19 magazine?","acceptedAnswer":{"@type":"Answer","text":"The Magpul PMAG 15 GL9 is widely regarded as the top aftermarket Glock 19 magazine for reliability and value, offering performance comparable to OEM at a lower price. ETS magazines are a strong choice for translucent viewing and extended capacities. For duty or defensive use, factory Glock OEM magazines remain the benchmark recommendation."}}]}