07775150 is referenced by 87 patents and cites 10 patents.

An indirect gas operating system for an M4 type automatic or semi-automatic firearm. The indirect gas operating system has a gas block having a cylinder. The gas block is fitted to a barrel assembly having a bore with the cylinder in communication with the bore. A piston having a piston end and a striking end has the piston end fitted to the cylinder. A bolt assembly having a striking surface is provided. When a cartridge is fired, gas displaces the piston end and causes the striking end to strike the striking surface displacing the bolt assembly. The cylinder and the piston are together removable as an assembly from the firearm without removal of the gas block.

Title
Law enforcement carbine with one piece receiver
Application Number
11/672189
Publication Number
7775150 (B2)
Application Date
February 7, 2007
Publication Date
August 17, 2010
Inventor
Arthur F Daigle
Plymouth
CT, US
Laurance Robbins
Plainville
CT, US
Paul Hochstrate
Plantsville
CT, US
Agent
Perman & Green
Assignee
Colt Defense
CT, US
IPC
F41A 5/20
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