1
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Modular firearm. Colt Defense, Perman & Green, November 7, 2006: US07131228 (143 worldwide citation)

An M-4 firearm having a lower receiver assembly and an upper receiver assembly. The upper receiver assembly is connected to the lower receiver assembly. The lower receiver assembly has a fire control assembly. The upper receiver assembly has a barrel and a hand guard. The hand guard has a venting fe ...


2
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Law enforcement carbine with one piece receiver. Colt Defense, Perman & Green, August 17, 2010: US07775150 (87 worldwide citation)

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 st ...


3
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Automatic or semi-automatic rifle. Colt Defense, Cantor Colburn, November 8, 2011: US08051595 (62 worldwide citation)

A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attac ...


4
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Law enforcement carbine with one piece receiver. Colt Defense, Cantor Colburn, May 10, 2011: US07938055 (52 worldwide citation)

A semi-automatic or automatic rifle is provided. The semi-automatic or automatic rifle includes a receiver having an integral hand guard portion, a barrel having a bore. The bore is removably connected to the receiver, the hand guard portion extending over and surrounding the barrel, an indirect gas ...


5
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Firearm with gas operating system. Colt Defense, Cantor Colburn, February 21, 2012: US08117958 (25 worldwide citation)

A semi-automatic or automatic rifle is provided the rifle having: a receiver having a hand guard portion; a barrel having a bore, the bore removably connected to the receiver, the hand guard portion surrounding at least a portion of the barrel; a gas block having a forward end and a rearward end ali ...


6
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Automatic or semi-automatic rifle. Colt Defense, Cantor Colburn, February 4, 2014: US08640372 (16 worldwide citation)

A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attac ...


7
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Firearm with gas operating system. Colt Defense, Cantor Colburn, August 13, 2013: US08505433 (14 worldwide citation)

An indirect gas operating system for a semi-automatic or automatic rifle is provided, the indirect gas operating system having: a sleeve removably secured to a forward end of a gas block of the rifle; a piston slidably received within the gas block, wherein the gas block and the sleeve fluidly coupl ...


8
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Automatic or semi-automatic rifle. COLT S MANUFACTURING IP HOLDING COMPANY, Cantor Colburn, April 4, 2017: US09612072 (2 worldwide citation)

An upper receiver for a firearm, the upper receiver having: a hand guard section removably connected to the upper receiver via a locking mechanism pivotally mounted to the hand guard section for movement between a locking position and an unlocking position, wherein the locking mechanism requires onl ...


9
Laurance Robbins, Kevin Audibert, Kevin Langevin: Modular automatic or semi-automatic rifle. COLT S MANUFACTURING IP HOLDING COMPANY, Cantor Colburn, November 21, 2017: US09823031 (1 worldwide citation)

A modular automatic or semiautomatic rifle. The rifle has a lower receiver assembly having a fire control assembly for firing the rifle. An upper receiver assembly is provided with a frame and a bolt carrier assembly configured for firing bullets of a predetermined caliber. The lower receiver has a ...


10
Paul Hochstrate, Laurance Robbins, Arthur F Daigle: Automatic or semi-automatic rifle. COLT S MANUFACTURING IP HOLDING COMPANY, Cantor Colburn, March 8, 2016: US09279632 (1 worldwide citation)

A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attac ...