The triggers on the CZ 550 is very adjustable and easy to do. Just look at your owner's booklet under tirgger adjustments. The A, B and C referred to in the instructions can be seen on either the inside of the front of back cover pages. You need a very small box-type wrench and a very thin screwdriver to do the adjustments. It's really no big deal, but if you feel completely like a fish-out-of-water doing this, then a gunsmith would probably do the job for about $25 or so, but most folks just adjust their own triggers. Tom Purdom