1
Richard E Swan: Modular sleeve. John P McGonagle, December 10, 2002: US06490822 (159 worldwide citation)

A Swan universal receiver sleeve attached to the top of a firearm upper receiver and extended forward above the firearm barrel to a position just short of the firearm front sight. The underside of the rear portion of the sleeve is fixedly attached to the receiver top. The underside of the forward po ...


2
Richard E Swan: Extended rigid frame receiver sleeve. John P McGonagle, September 6, 1994: US05343650 (147 worldwide citation)

An extended rigid interface frame with upper and lower rails joined to a firearm receiver and extending forward above the firearm's barrel to a head assembly replacing the firearm's normal front sight. A weaver type interface return portion is provided below the barrel from the head assembly to the ...


3
Richard E Swan: Modular sleeve yoke. John P McGonagle, December 31, 2002: US06499245 (116 worldwide citation)

A Swan universal receiver sleeve attached to the top of a firearm upper receiver and extended forward above the firearm barrel to a position just short of the firearm front sight. The underside of the rear portion of the sleeve is fixedly attached to the receiver top. The underside of the forward po ...


4
Richard E Swan: Attachment device. July 11, 1989: US04845871 (114 worldwide citation)

The invention disclosed herein comprises a means of attaching a first device to a second device. The attachment means includes a camming surface and is spring loaded. The attachment means is particularly useful in attaching a first weaver interface to a second weaver interface. The camming surfaces ...


5
Richard E Swan: Self-aligning flip-up sight. John P McGonagle, July 9, 1996: US05533292 (89 worldwide citation)

A self-aligning flip-up mechanism for aiming devices for use with firearms. The mechanism folds the aiming device into the contour of the firearm during non-use. The mechanism is spring-loaded and flips into a vertical operational position with a simple movement of a finger or thumb. The mechanism c ...


6
Richard E Swan: Universal receiver sleeve. John P McGonagle, September 1, 1992: US05142806 (87 worldwide citation)

A sleeve added to the upper receiver of a firearm for incorporating firearm ancillary equipment. The sleeve has an upper enhancement interface portion and a lower firearm interface portion. The upper enhancement interface portion has standard, universal dimensions regardless of the firearm. The lowe ...


7
Richard E Swan: Buffered attachment device. John P McGonagle, January 11, 1994: US05276988 (81 worldwide citation)

A buffered means for attaching a first device to a second device. The attachment means includes a camming surface. The invention provides a buffer element between the attachment device camming surface and the area to which the attachment device is affixed.


8
Richard E Swan: Drop-in laser. John P McGonagle, September 16, 2003: US06618976 (73 worldwide citation)

A laser module adapted to being joined to a modular sleeve upper handguard piece top longitudinal gap. The laser module has two, parallel elongated submodules positioned so that an elongated, generally rectangular space is formed between the submodules. The laser module elongated space fits onto the ...


9
Richard E Swan: Modular hand guard assembly. Barlow Josephs & Holmes, June 19, 2012: US08201353 (58 worldwide citation)

A modular hand guard assembly serves both as a hand guard system and as an integrated interface system for mounting various weapon accessories and attachments thereto. The modular hand guard assembly includes a removable forward rail section that can be removed from the forward portion of the hand g ...


10
Richard E Swan: Low profile flip up site. Barlow Josephs & Holmes, April 15, 2008: US07356962 (54 worldwide citation)

A low profile, self-aligning, flip-up mechanism for aiming devices used with firearms. The mechanism folds the aiming device into the contour of the firearm during non-use. The mechanism is spring-loaded and flips into a vertical operational position with a simple movement of a finger or thumb. The ...