This is the 20 round extension kit for factory GSG 1911 .22LR magazines from M9 Engineering.
A beautifully machined aluminium +10 round extension unit which extends the GSG factory magazine to accept a full 20 rounds in standard configuration, while remaining within the magazine length limit for IPSC open class.
- CNC cut extension tube
- Improved base plate - wider grip
- +1 follower (standard +10 configuration)
- +4 follower (optional +12 capacity if fitted, or +4 capacity used standalone on a normal magazine)
- Fitting kit
Please note: the extension is designed for permanent fitting to a GSG 1911 .22LR magazine tube.
Additional +13 or +14 rounds capacity can be achieved by hand modifying the spring pattern of the GSG 1911 factory magazine spring, instructions included if you want to try this.
Please note the GSG 1911 .22LR magazine pictured is not included, available separately.