I bought the 16ga. nailer first about one and a half years ago . loved it then i bought the 18ga. nailer about one year ago . loved that one to. my problem is now the casings are breaking . there falling apart . i cant use any of them. very disappointed in both guns .i used them every day one the job . the cost of the both guns were about $405.00 .in one and a half years they are worthless .very dissapointed.