Specna Arms anodized metal body
The next-generation body, which you may have already seen in high-end replicas, features a modern design and technical improvements. Among the design's advantages is the ESA 2.1 quick-change spring system, introduced in early replicas.
The ESA 2.1 system allows for the mainspring to be replaced in minimal time, thus adapting the replica's firing speed to the playing area, ensuring the ideal balance between fire efficiency and the safety of yourself and other players. The ESA 2.1 system is covered by European patent number: 007422159-0001.

Other notable features include a working bolt catch, ambidextrous fire selector, and ambidextrous magazine release.
Included with the bodysuit:
- ESA 2.1 spring guide
- Dedicated fire selector plate
- Trigger pin
- Selector gear
- Magazine release
- Shutter lock
- Charging lever
- Rear pin