Have you been happy with the guns ? I assume they come with a 10 round mag. Do you know if extras are available ? ThanksI bought 3 Vector HK clones from Kellyenterprises.net, there was just a small fee to add the bullet button and Chuck at Kelly Enterprises handled everything from his end. Just make sure your FFL will accept it that way. Some California FFL's are still not to knowledgable of the bullet botton and just dont want the hassle, but lately many are taking delivery and trnasfering to you no problem. CA DOJ is also not objecting to it either.