I ordered parts for a suppressor for my husband's kp9, they sent parts for a AR-15, when I sent the parts back I was not refunded full amount. They deducted original shipping cost and then charged me $5 shipping to return the parts. The mistake was theirs I specified what gun I was buying parts for and they sent me the wrong ones, I will never buy from this company again. Never heard of being charged twice for shipping when I was not at fault.