HKS Single Stack Magazine Speedloader. These Speed Loaders made by HKS can load 15 rounds in 18 seconds with ease. This HKS Single Stack Pistol Magazine Speedloader is constructed from plastic for a lightweight accessory you can take anywhere you need it. Grab an HKS Single Stack Mag Speedloader for faster more efficient loading. Specifications for HKS Single Stack Magazine Speedloader: Manufacturer: HKS Color: Black Fabric/Material: Plastic Gun Make: Colt Condition: New Features of HKS Single Stack Magazine Speedloader: Capable of loading 15 rounds in 18 seconds Magazine slips into loader and is held in by hand. Depress thumb lever and load. That's it Package Contents: HKS Single Stack Magazine Speedloader HKS Magazine Speed Loader Single Stack Adjustable Magazine Model 943