M16 modified with pushrod operating system and conversion...

Details M16 modified with pushrod operating system and conversion... M16 modified with pushrod operating system and conversion...

2005-02-11

2008-09-02

Johnson, Stephen M (Department: 3641)

Ordnance

Automatic

Gas piston type

C089S191020

Reexamination Certificate

active

07418898

ABSTRACT:
A push rod operating system for an AR-15/M-16 rifle includes an AR-15/M-16 rifle having a barrel coupled to an upper receiver, a bolt carrier carried by the upper receiver, and a mechanical key coupled to the bolt carrier. A gas block is coupled to the barrel, the gas block having a bore therethough. A rod tube extends from the gas block in communication with the bore, toward the upper receiver. A gas plug has a gas chamber closing the bore of the gas block opposite the rod tube. A discharge gas pathway permits discharge gasses to enter the gas chamber from the barrel. A piston rod element is carried in the rod tube with a piston portion thereof reciprocally received within the bore of the gas block and movable between a first position abutting the gas plug to define an operating volume, and a second position. A push rod element is carried by the rod tube and engages the mechanical key and the piston rod element.

REFERENCES:
patent: 1738501 (1929-12-01), Moore
patent: 2482880 (1949-09-01), Sefried

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