When pointing guns at each other in the weapon shop, a semi-automatic pistol changes into a revolver and back again many times between shots.
Before jumping off the cliff Dani is behind Cole and slightly to the left. As they jump off the cliff immediately afterwards Dani is to the right of Cole.
(at around 29 mins) After Dani and Cole jump off of the cliff and are washed down the river, Cole complains that Dani lost his "Pearl handled 9mm" gun. The gun that he had was not pearl handled, and was a WW2 model Colt 1911 which is a .45 ACP weapon.