Colt pistols of 1900 series

Early patents of the Browning semi-auto pistols
- Patent #580923 - gas-operated toggle system
- Patent #580925 - Rotary barrel
- Patent #580926 - Blow back pistol
- Patent #580924 - Short recoil unlocking
Early production of the Colt semi-auto pistols
- Comparing the early Colt 1900 of production vs Patent #580, 924
- .38 ACP cartridges vs .38 Super
- The firing pin safety
- New firing pin and dovetailed rear sight
- Navy contract Model 1900
Features of the Colt 1900 pistol
- 200 pistols ordered by the US Army
- Field stripping of the model 1900
- Usual markings on the Colt 1900 commercial
- Model 1900 with finger grooves located at the front
- Upgraded slide and round hammer
- Colt Model 1900 parts nomenclature
The Colt 1900 pistol for the U.S. Military
- 1900 test results with the Colt 1900 pistol
- First Army contract chart
- U.S. Navy specific markings
- First U.S. Navy contract chart
- US Army second contract
The Colt .38 "Sporting Model"
- Early Sporting Model
- The slide Patent markings
- Slide serrations
- Hammer profile
- Grip plates
- Magazines
- Takedown bushing
- Colt "Verified Proof" marking
- Sporting Model production chart
- Estimated quantities by variation
The Colt 1902 "Military"
- Lengthening of the grip
- Recoil spring buffer block
- Concave recoil spring plug
- Hold open latch
- Modified magazine follower
- 1902 Military Model Production Chart
- Slide markings
- Variations by year and serial number
The Colt Pocket 1903 in caliber .38 ACP
- Colt Pocket 1903 variations
- Estimated quantities by variation
- Variations by year and serial number
Field dismounting of the Colt 1902 "Military"
Disassembling the barrel and recoil spring
- The forward barrel cross pin under pressure
- The barrel swivels
- Special attention when removing the forward barrel retaining pin
- At the bottom of the recoil spring tunnel
Disassembling the grip components
- The ejector
- The hold-open latch
- Removal of the magazine catch and multi-purpose spring
- Disconnector and sear
- The hammer assembly
Disassembling the slide components
- The rear sight
- The inertial firing pin
- The extractor
- Parts of the Colt "Military" 1902
Firing cycle of the Colt 1902 Military
- Barrel locking and unlocking
- A pair of pivoting links
- Barrel ribs and slide grooves
- The holdopen latch
Trigger work and safeties of the Colt 1902 "Military"
- No conventional manual safety
- The first hammer notch
- The trigger extension does not bear directly against the sear
- How the multi-purpose spring works
- Action of the disconnector

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