Dlask is very good - replacing a barrel requires.....a new barrel, therefore does not indicate ANYTHING about the speed that work takes place, especially if that barrel is coming from Europe (or am I totally out to lunch on that?). Since Dlask makes 1911's and 1911 parts, there shouldn't be an issue - the magnesium trigger they make is one of the best available anywhere. Also very good for 1911 work is Bits of Pieces, give either one a call. Dlask used to sell a model with a complete "carry bevel" job done to it so taking the sharp edges of is something they're familiar with. Both have web sites with examples of what they do - take a look.