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An Experiment Dual Tubed Crosman 1377 MSP Pistol

Work to date on an experimental multistroke pistol featuring dual pressure tubes that supply air to a shared barrel.   The design uses a pair of factory sears linked by a common trigger inside of a custom made housing.   A custom breech will be made which serves as a manifold routing the compressed air from the tubes into the barrel's inlet port.  A large caliber barrel will  be mounted in order to efficiently utilize the higher volume of air that is available.  The stock's design will be similar to that of a silhouette pistol yet will uniquely function as the pistol's "pump handle" in order to reduce pumping force by increasing leverage while minimizing the overall pistol length.  A crude "proof-of-concept" frame was fabricated and tested to 8 pump strokes.  The results were very encouraging.  The design yielded an extremely manageable and comfortable level of pumping effort even at full compression.

*Click on any image for a larger view.


A Video Demonstrating The Trigger Mechanism For The Dual Tubed Pistol


The Imagined Evolution Of The Dual Tubed Air Pistol As Conceived In About 2004.  This Animation Is Of The Upper Section Of The Concept 'Super Pumper'.


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