Fits Glock 19

Glock 19 Magazine: OEM, Extended, and Aftermarket Options for All Generations

A Glock 19 magazine is a double-stack, polymer-bodied ammunition feeding device that holds 15 rounds of 9x19mm Parabellum and inserts into the compact Glock 19 grip. The Original Equipment Manufacturer (OEM) Glock 19 magazine measures 2.87 inches (73 mm) in length, weighs 2.47 oz (70 g) empty, and uses steel-lined feed lips, a coated steel compression spring, and a polymer follower with witness holes for visual round-count verification. Glock 19 magazines are available in 5 capacity configurations: 10-round state-compliant, 15-round standard, 17-round (using a Glock 17 magazine that extends below the G19 grip), 24-round extended, and 33-round extended. TactaBlue stocks Glock 19 magazines from Glock OEM, XTech Tactical, Magpul, Elite Tactical Systems (ETS), and Mec-Gar for Gen 1 through Gen 6 frames.

The Glock 19 magazine functions through a staggered-column (double-stack) design that narrows to single-feed presentation at the feed lips. There are 7 components in a Glock 19 magazine: the polymer body, steel-lined feed lips, steel compression spring, polymer follower, floor plate, floor plate locking tab, and floor plate insert. Each component serves a specific function in the feeding cycle - the spring drives the follower upward, the follower positions the top cartridge at the correct feed angle, and the steel feed lips control cartridge release timing during the slide's forward stroke.

Glock 19 Magazine Capacity and Compatibility

The standard Glock 19 magazine capacity is 15 rounds of 9x19mm in a double-stack configuration. The Glock 19 accepts magazines from 5 capacity tiers:

• 10-round magazines for state-compliant configurations in California, Connecticut, Maryland, Massachusetts, New Jersey, New York, and other restricted jurisdictions
• 15-round standard OEM magazines that sit flush with the G19 compact grip
• 17-round Glock 17 magazines that function in the G19 but extend 0.59 inches (15 mm) below the grip
• 24-round extended magazines for range and competition use
• 33-round extended magazines compatible with both the G19 and pistol caliber carbine (PCC) platforms

Glock 19 magazines are universal across all Glock 19 generations. A Gen 1 Glock 19 magazine fits and functions in a Gen 5 or Gen 6 G19 frame. Gen 5 magazines use an orange follower for visual confirmation that the magazine is empty when the slide is locked back. Gen 1-4 magazines use a black follower. Both follower colors function identically.

Glock 17 and Glock 19 Magazine Differences

The difference between a Glock 17 magazine and a Glock 19 magazine is length and capacity. The Glock 17 magazine measures 4.74 inches (120 mm) and holds 17 rounds. The Glock 19 magazine measures 2.87 inches (73 mm) and holds 15 rounds. A Glock 17 magazine fits in a Glock 19 but extends below the grip. A Glock 19 magazine does not fit in a Glock 17 because the shorter magazine body does not engage the G17 magazine catch at the correct height.

Cross-Model Magazine Compatibility

The Glock 19 magazine is compatible with 4 other Glock models: the Glock 26 (with a grip sleeve to cover the exposed magazine body), the Glock 45 crossover, the Glock 19X, and the Glock 23 frame when paired with a 9mm conversion barrel. The G19 magazine does not fit .40 S&W models (G23, G27) or .357 SIG models (G32) because these calibers use wider feed lip geometry.

Glock Factory Magazines for the Glock 19

Magazine G19 10rd

The Glock factory 10-round magazine for the G19 uses the same polymer body width as the 15-round magazine with a shorter internal spring and a blocking insert that limits capacity to 10 rounds. The 10-round G19 magazine sits flush with the compact grip and complies with state capacity restrictions. The 10-round magazine weighs 2.18 oz (62 g) empty.

Magazine G19 Plus 2

The Glock factory Plus 2 magazine extension adds 2 rounds to the standard 15-round G19 magazine for a total capacity of 17 rounds. The Plus 2 base pad extends 0.47 inches (12 mm) below the standard floor plate and adds 0.35 oz (10 g) to the magazine weight. The Plus 2 extension provides the same capacity as a Glock 17 magazine with a more ergonomic grip extension profile designed for the G19 frame.

XTech Tactical Upgraded Glock 19 Magazines

MAG Series Upgraded-Over-Factory Magazines

XTech Tactical MAG Series magazines are upgraded replacements for OEM Glock 19 magazines that use a reinforced polymer body, enhanced steel feed lips, and an upgraded spring for more consistent feeding. The MAG Series magazine maintains the same 15-round capacity and dimensions as the OEM G19 magazine. XTech Tactical manufactures the MAG Series in the United States with a lifetime warranty.

Extended Glock Magazines from XTech Tactical

XTech Tactical extended Glock magazines increase capacity beyond the standard 15-round OEM specification. Extended XTech magazines are available in 17-round, 20-round, and 22-round configurations for the Glock 19. Each extended magazine uses the same reinforced polymer body and enhanced feed lip design as the MAG Series.

Signature XTech Tactical Magazine for Glock Handguns

The Signature XTech Tactical magazine features a textured grip surface on the magazine body and a flared floor plate for faster magazine extraction during emergency reloads. The Signature series is available for Glock 19, Glock 17, and Glock 26 frames in standard and extended capacities.

ETS Magazines for Glock 19

Elite Tactical Systems (ETS) manufactures translucent polymer Glock 19 magazines that allow visual round-count verification through the magazine body without relying on witness holes. ETS Glock 19 magazines are available in 15-round standard, 22-round extended, and 31-round extended configurations. The translucent body is made from an advanced polymer blend that maintains structural rigidity at temperatures from -60 degrees F (-51 degrees C) to 300 degrees F (149 degrees C). ETS magazines use steel feed lips and a steel compression spring.

Glock 19 Magazine Components and Maintenance

Feed Lip Wear and Inspection

Glock 19 magazine feed lips control cartridge presentation angle during feeding. Steel-lined feed lips on OEM magazines resist spreading under spring pressure across 50,000+ loading cycles. Inspect feed lips for visible spreading, cracking, or asymmetric cartridge positioning every 5,000 rounds. Replace the magazine when feed lip spread exceeds 0.02 inches (0.5 mm) from factory specification.

Spring Tension and High Round Count Rebuilds

Glock 19 magazine springs lose approximately 5% of their tension after 10,000 compression cycles. A high round count rebuild involves replacing the compression spring and follower to restore factory feed reliability. Replacement springs from Glock OEM, Wolff Gunsprings, and ISMI are available at TactaBlue. Keep magazines loaded to capacity for storage - modern steel magazine springs lose tension from cycling (compression and decompression), not from being held in a compressed state.

Floor Plate and Base Pad Options

Glock 19 magazine floor plates are interchangeable across all G19 generations. Aftermarket base pads from Taran Tactical Innovations (TTI), Hyve Technologies, and ZEV Technologies add +2 to +5 rounds to the standard 15-round capacity. The TTI Firepower Base Pad adds +3 rounds and extends 0.62 inches (16 mm) below the standard floor plate. A Glock magwell funnels the magazine into the grip for faster reloads when using standard-length or extended base pad magazines.

Glock 19 Magazine Extensions and Capacity Upgrades

Glock 19 9mm Magazine Extension Options

Glock 19 9mm magazine extensions attach to the base of OEM magazines to increase capacity. There are 4 extension sizes available:

• +2 extensions increase capacity from 15 to 17 rounds with minimal grip length increase
• +3 extensions increase capacity from 15 to 18 rounds
• +5 extensions increase capacity from 15 to 20 rounds and extend approximately 1.0 inch (25 mm) below the grip
• +6 extensions increase capacity from 15 to 21 rounds

Magazine extensions that add more than +2 rounds may cause printing (visible outline) under concealment garments. Evaluate extension length against concealed carry requirements before purchasing.

Glock 19 30-Round and 33-Round Magazines

The OEM Glock 33-round magazine is the longest factory-produced Glock 9mm magazine. The 33-round magazine measures 8.39 inches (213 mm) in length and extends 5.52 inches (140 mm) below the Glock 19 grip. The 33-round magazine is compatible with 12+ pistol caliber carbine (PCC) platforms including the KRISS Vector, Ruger PC Carbine, and Kel-Tec Sub-2000. Aftermarket 30-round and 32-round options are available from ProMag, SGM Tactical, and ETS Group.

Glock 19 50-Round Drum Magazine

The Magpul PMAG D-50 GL9 is a 50-round drum magazine compatible with the Glock 19 and all Glock 9mm double-stack models. The D-50 GL9 weighs 7.5 oz (213 g) empty and measures 5.0 inches (127 mm) in diameter. The drum magazine uses a dual-stack, dual-feed design with a ratcheting loading lever.

Glock 19 Magazine Accessories

Magazine Loaders

Glock 19 magazine loaders reduce thumb fatigue during loading. The Maglula UpLULA universal pistol magazine loader fits all double-stack 9mm magazines including Glock 19 OEM and aftermarket magazines. The Glock OEM speed loader fits Glock double-stack 9mm magazines only.

Magazine Pouches and Holsters

Glock 19 magazine pouches are available in single, double, and triple configurations. Materials include Kydex, injection-molded polymer, and nylon. A Glock holster with an integrated magazine pouch provides a combined carry solution for the pistol and spare magazine.

Glock 19 Generations and Magazine Differences

Glock has produced 6 generations of the Glock 19. Gen 1 (1988) was the first compact G19. Gen 2 added checkered texture. Gen 3 (1998) introduced the accessory rail and finger grooves. Gen 4 (2010) added the reversible magazine catch and dual recoil spring. Gen 5 (2017) removed finger grooves, added the Glock Marksman Barrel (GMB), flared magwell, and ambidextrous slide stop. Gen 6 (2025) integrated a factory optic-ready slide cut.

All Glock 19 magazines from Gen 1 through Gen 6 are cross-compatible. The only magazine-related change across generations is the follower color (black for Gen 1-4, orange for Gen 5-6) and the Gen 5 flared magwell that provides a wider magazine insertion funnel.

Glock 19 Magazine State Compliance

Magazine capacity restrictions vary by state. Ten states and the District of Columbia restrict magazine capacity to 10 or 15 rounds as of 2025. The Glock 19 10-round magazine complies with all current state capacity restrictions. The standard 15-round magazine complies with states that set the limit at 15 rounds (Colorado, Vermont). TactaBlue does not ship magazines exceeding local capacity limits to restricted jurisdictions. Verify magazine legality in your state before purchasing.

Glock 19 Magazine Specifications Summary

The Glock 19 is the most popular compact 9mm pistol in the United States with the largest aftermarket magazine selection of any compact handgun. The G19 OEM 15-round magazine is the baseline for all Glock magazines in the compact 9mm category. Aftermarket manufacturers including XTech Tactical, Magpul, ETS Group, and Mec-Gar provide capacity options from 10 to 50 rounds. All Glock 19 magazines at TactaBlue ship with free ground shipping to the contiguous 48 states. Browse the full catalog of Glock accessories for triggers, night sights, threaded barrels, and extended slide releases that complement the Glock 19 platform.