Pirate Arms MP5 Fixed Stock GBBR Hop-Up Unit replaces the paddle mount on

replaces the paddle mount on the polymer holster

accommodating for RMR®

Does NOT include hammer springs

Also includes a set of red lenses

The battery pack is housed inside the solid stock and is accessible by removing the metal buttplate on the end of the stock

Pirate Arms MP5 Fixed Stock GBBR Hop-Up Unit replaces the paddle mount onSlim design and absolute top quality. This stock can be used to convert an MP5 A5 into an MP5 A4 or to replace a damaged MP5 A4 stock. Includes Receiver Pin and Butt Pad. Sling attachment point. Extremely solid plastic construction with metal sling plate. Butt Pad can be removed by sliding it downwards to access battery compartment. For Airsoft Models only. Black in colour.