Deadly force in defense of habitation: conflict of authority
1. Common law approach: home-dweller may use deadly force if he reasonably believes it is necessary to prevent imminent and unlawful entry
2. Some jurisdictions authorize deadly force based on a reasonable belief that the intruder intends to commit a felony
3. Some jurisdictions authorize deadly force based on a reasonable belief that the intruder intends to commit a forcible felony, or otherwise poses a risk of death or bodily harm
Use of "spring guns" or mechanical devices
1. Common law rule: One has a defense to homicide by spring gun if he would have been privileged to use deadly force had he been present
2. Modern trend (incl. MPC): One is never privileged to protect one's habitation by "spring guns" or mechanical devices
Illustration of modern trend see, Bishop v. State