From G&G we have the Gas Magazine for STP45
The Magazine
This is a Gas Magazine for G&G’s STP45 Range of pistols. It has a 30R Capacity and features G&G’s cold resistant rubber for the gas router as well as a lockable follower and wider track for easier BB loading. It is constructed from a G&Gs durable lightweight polymer with polymer feed lips and baseplate.
Compatibility
This magazine is designed for G&G’s STP45 Series of Pistols and it’s compatibility with other Pistols is unknown.