Glock Slimline pistols get a boost in capacity: Glock took the opportunity of the 2026 NRA Annual Meeting & Exhibits in Houston, Texas, to announce the introduction of new 15-round magazines for the G43X and G48 9mm models. A 15-round mag has been presented for the G44 rimfire pistol chambered in .22 LR, too. All these models, which until now came standard with a 10-round magazine capacity, will come standard with 15-round Glock magazines. The magazines themselves will be available in the US starting from May 2026.
Glock's new 15-round double-stack magazines
The new 15-round Slimline magazine has a metal, double-stack design and includes a radius in the magazine catch recess that allows customers to maintain the standard magazine catch.
The new 15-round magazine for the G44 pistol chambered in .22 LR, on the other hand, features a polymer, double-stack design with integrated load-assist.
