Almost Finished Mp5k

After seeing motabois mp5k i tryed to build it from the one picture he has of it here. https://www.instructables.com/id/My-Guns-Current-and-Upcoming/ 
so far this is what i have done
body of the gun
the front handle and grip
ram guide and a trigger(i'm not sure how well the trigger works because i don't have enough hinges)
magazine 
trigger guard
and a part of the mag well
so id appreciate any feedback on it and i'm open to any ideas of how to improve the gun.