Sorry to take so long to reply. The DAO LEM (law enforcement Modification), is a very light DA trigger pull, you can get it in different weights, from 8.5- to 4.5lbs. Things like the firing pin block spring, and the trigger return spring change the weight. The hammer is two piece, not unlike the Para LDA system. The trigger for the first shot is long but in mine, it is around 6- 6.2lbs. After the first shot, you can either do one of two things; you can let the trigger out to the original distance, or you can let it out a little just enough to let it reset, at which point it will have a distance similiar to SA pull. The good thing is that it is always the same weight for trigger pull. Unlike a typical DAO pistol, you can dryfire with the same weight over and over, but with the LEM, it is like the LDA, the movement of the slide pre-cocks the internal hammer. So after each dryfire, you would have to rack the slide manually to get the LEM pre-cocked trigger pull. You can dryfire without doing this, but you are pressing an 18lbs trigger. (good for building up trigger pull strength, and control))