Wakshaani, your updated stats drop the Crawler from a small drone to a Mini drone, with a rather dramatic reduction to the drone's body (3->1), making it much more limited in terms of what it could mount. The core version could mount an assault rifle, the updated version can mount up to a light pistol, or a machine pistol if you downgrade another stat. There is no other suitable body 3 small drone to replace it - you might be able to gut a Shamus or MCT Tunneler to get close, but even then the addition of Gecko Grips would put you over in points.