Oh there are tons of them. Take a look at my page and look at the UMP or Oodassault pistols. My BAW is another one of my weapons but someone else posted it. The Z35 A little overrated and a bit ugly in my opinion but nevertheless, one of the most popular K'nex weapons. There are plenty of others if you search hard enough. I don't exactly know what other features you'd like so I gave you a good mix but I can't be bothered to find every single assault weapon that I would recommend.