Glock
Factory 15-round 10mm Auto magazine for the Glock 20 Gen4 and Glock 40 MOS
The Glock 20 Gen4 factory magazine holds 15 rounds of 10mm Auto, making it the highest factory capacity for a production 10mm pistol. The G40 MOS long-slide variant uses the same magazine body. Both pistols see use for outdoor carry where 10mm provides genuine ballistic advantage over 9mm against large animals.
The 10mm magazine body dimensions are identical to the .45 ACP (G21) magazine externally, but the internal geometry is caliber-specific. Do NOT mix 10mm and .45 ACP magazines.
CAA
CAA MCK for Glock
3 shared compatibility tags
Recover Tactical
Recover Tactical 20/20N
3 shared compatibility tags
Glock
Glock 20 Gen4
4 shared compatibility tags
Ruger
Ruger RXM
2 shared compatibility tags
Glock
Glock 17 Gen3
3 shared compatibility tags
Glock
Glock 21 Gen4
3 shared compatibility tags
Ruger PC Carbine Upgrades 2026: Best Stocks, Triggers, Chassis, Optics & Glock Mags
Best Ruger LCP MAX Upgrades 2026: Sights, Triggers, Magazines & Holsters Ranked (Galloway, XS, Pearce, Tulster)
Civilian IAR Build Guide 2026: AR-15 Automatic Rifle Setup (Block 2, Hopsaw, Belt-Fed)
Add the Glock 20 Gen4 10mm Auto 15rd OEM Magazine to your build and see how it enhances your platform.
Your cart is empty
Add some merch to get started.