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Early developments of "Machinepistols"

- In the confines of the WW I trenches
- Luger pistol with the 32-round drum magazine
- Machine fire carbine version of the Mauser C96 pistol
- Schmeisser's design known as the "Maschinen Pistole 18"
- Spanish selective fire copies of the Mauser C96
- Bestegui Hermanos (Royal) & Unceta & Cie (ASTRA)
- Mauser C96 with a selective fire capability

Early Browning type pistols with selective fire

- Himan S. Lebman's prototypes
- John Dillinger and Baby face Nelson
- Star or Llama selective fire Browning designs
- Star Model D
- Llama Model "Plus Ultra"
- French UNION Model "Rafaleur"

The STAR Machinepistole Model 1922

- The trigger mechanism
- Selective Fire Mechanism
- Detail of the new parts and modifications
- Operation of the Star MD in full-auto mode
- Cyclic rate retarder device

Mechanical features of the Colt 1911-A1

- Phantom view of the Colt Model 1911-A1
- The Colt 1911 trigger mechanism
- The function of the disconnector
- When the slide recoils
- The grip safety
- The thumb safety

Joe Ramos' first machinepistole prototype

- Joe Ramos and Hector Villanueva
- Late 60's researches
- The experience bloody gunbattles at short range
- Preliminary works were undertaken by military armorers
- A request to private contractors and gunsmiths
- The JURAMS CMP-45 as one of the contenders
- First prototype working with an "open slide" action
- Mechanical details
- Conclusions of all the short comings

Joe Ramos' second machinepistole prototype

- A completely new approach
- To preserved the original design of the Model 1911-A1
- Modifications of the 1911-A1 receiver
- Modification of the grip safety
- Modification of the trigger stirrup
- Creation of new parts
- Sear lever with connector
- The tripping lever
- The fire selector mechanism
- Selector of pivoting type or of sliding type

Operation of the J. Ramos' selective fire system

- Firing in semi-auto mode
- Close-up view of the selective fire mechanism
- When the trigger is depressed
- Step by step explanation
- Firing in full-auto mode
- When the trigger is depressed
- Step by step explanation

Front folding grips and other improvements

- The first model of forward grip
- A first improvement by extending the grip base
- How the base was fastened to the trigger guard
- Technical details of the folding grip designs
- The final version was an all-metal folding grip
- High capacity magazines
- Drum magazines and extended straight magazines
- Removable or even folding shoulder stocks
- Modification of the Colt main spring housing
- Stocks made from wood planks
- Stock attachment of the "Lebanese style"

Final step : The Combat Submachine Pistol

- The Jurams CSP - 45 (Combat Submachine Pistol)
- 20 and 30-round double column straight magazines
- Several sizes of barrel
- Ventilated jacket & muzzle break
- Concealment of the tripping mechanism
- The CSP - 45 was nearing completion in early 1972
- ANIMATED SEQUENCE of the Ramos selective fire mechanism

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