Published 2015 May 4 at 1024 × 1787 in Browning Firearm Museum (part 1of2) Browning pistols sold to Colt ← Previous Next → Browning designs sold to Colt, all were patented from 1896 to 1899. 1. .38 third model. 2. Fourth model slide mechanism, foreunner to the .45 Army pistol. 3. Fifth model .38, rotating barrel. 4. Sixth model .38 pistol produced as the M1900.