This a remix of the DB firearms 1022 receiver for the Ch0den/Ch0rtex 10/22 chassis. Can be used on a regular chassis by removing the rear knub. The receiver has been made one piece with the top rail and the holes eliminated.  The original file is included. 

Example of chassis it fits here: [https://makerworld.com/en/models/1749817-ruger-10-22-ch0rtex-chassis-remix-full-handguard#profileId-1860145](https://makerworld.com/en/models/1749817-ruger-10-22-ch0rtex-chassis-remix-full-handguard#profileId-1860145)