Detective Dawson describes the murder weapon as a ".45 caliber, Marine standard issue sidearm." Since 1985, the USMC standard issue sidearm has been the Beretta M9, 9mm, semiautomatic pistol.
The car crash would not have resulted in the injury and entrapment shown. Since the vehicle above hit the A-pillar and windshield of the car that was being removed at an angle, this would press down the A-pillar but not push the dash backward as shown. That type of damage takes lace when the car strikes a fixed object on a level plane, such as a rear end crash.