The S&T Magazine for the M1903A3 and Kar 98K is a shared, low-profile magazine designed for the spring-powered airsoft replicas of these historic rifles. 
 
 
Key Specifications
Compatibility: Designed exclusively for S&T (Smart Team) brand spring-powered M1903A3 and Kar 98K rifles.
Capacity: Most standard versions hold 25 rounds (BBs). Note that some variants or older listings may specify 15 or 20 rounds.
Construction: Typically made of lightweight ABS plastic with a black finish.
Loading: Filled using a standard Speedloader.
Internal Parts: Uses a spring-loaded feeding mechanism with a feed lip that holds BBs in place until inserted into the rifle's magwell.