Per Dallas, DMBs improvements over the Dickson are as follows:
1. Better steels (Alloy vs. Carbon) the main improvement
less distortion in hardening
internal parts are tougher and more resilient
2. Strengthening the Fore end iron at the rear of the knuckle by using a radius instead of a sharp corner.
3. Constructing the barrel lump slots in the action body without drilling through the bottom of the action. This allows a shorter trigger plate than in the Dickson and more strength.
4. The addition of an integral pillar to the upstanding bar on the lockplate there by strengthening the lockplate.
