Knex Mp5

Hey guys. this is my new knex mp5, a big thanks to knexguy237 for his idea =D this gun was very challenging for me. the magazine.... i hate it, it works but i dont like it i hate small magazines. the gun itself has a good range no magazine jams and works fine, nothing special at all.

what can i build next?

any ideas what i can do better? and again ☺ excuse my bad english