Abstract: A strut tool including a hook portion for engaging an upper receiver assembly and a pivoting portion for engaging the takedown pin of a lower receiver assembly of a firearm that acts as a removable strut for holding the upper and lower receiver assemblies in a relatively aligned open angular position providing access to the inner bores and mechanisms of the firearm. The pivoting portion includes a bore accommodating the placement of the takedown pin in conjunction with the lower receiver assembly providing a pivotal connection permitting the angular alignment of the upper and lower receiver assemblies in an open and fixed position. The hook portion includes a takedown block engagement region that provides a means to accommodate the insertion and engagement of the takedown block present on the upper receiver assembly for the purpose of reversibly positioning and holding the strut tool in said relatively aligned position with respect to the lower receiver assembly.

Abstract: A magazine mounting platform having at least one mounting fixture for insertion into the magazine compartment of a firearm thus securing the firearm in place. The magazine mounting fixture may include at least one dowel pin operable for insertion into receivers on the platform. Some embodiments may also include a rotational adapter which allows for a firearm mounted on the fixture to be rotated. Risers may be included to provide additional support for a firearm by securing in place a barrel or a stock. Some embodiments may include magazine mounts for M4 carbine type, AR rifle type or Model 1911 pistol type firearms.

Abstract: A tool providing a means to safely extract and/or insert a roll pin from the trigger guard assembly of a lower receiver unit of an automatic or semiautomatic rifle. Current tools fail to provide positive engagement and support of the trigger guard region, particularly the trigger guard lips which can easily be snapped or fractured during a roll pin extraction or insertion process. Accordingly, the present disclosure provides an improved means to align and support a lower receiver unit by means of complementary mating and stop regions that secure the lower receiver in position while providing one or more cutouts that accommodate protruding levers and buttons on the lower receiver. Some embodiments feature a contoured top section having at least one of a plurality of surface features selected from a cutout, a mating region and a stop region; and a roll pin receiving port.

Abstract: An operating system for an aircraft according to an exemplary aspect of the present disclosure includes, among other things, a core services layer and a hardware interface layer that is time and space partitioned from the core services layer. The hardware interface layer is operable to control communications with hardware in a computer.

Abstract: An operating system for an aircraft according to an exemplary aspect of the present disclosure includes, among other things, a core services layer and a hardware interface layer that is time and space partitioned from the core services layer. The hardware interface layer is operable to control communications with hardware in a computer.

Abstract: An improved operating system and architecture, particularly useful for aircraft, provides a schedule for multiple tasks that ensures that each task has sufficient execution time and does not interfere with any other tasks. In the operating system, each task is scheduled to a deadline monotonic algorithm. The algorithm creates a schedule for the tasks in which the tasks are time partitioned by task, not by task level. The APIs in the operating system are provided by the services. Thus, changing a service, e.g. because of a change in hardware, is facilitated, since the service will provide the proper API.

Abstract: A magazine mounting platform having at least one mounting fixture for insertion into the magazine compartment of a firearm thus securing the firearm in place. The magazine mounting fixture may include at least one dowel pin operable for insertion into receivers on the platform. Some embodiments may also include a rotational adapter which allows for a firearm mounted on the fixture to be rotated. Risers may be included to provide additional support for a firearm by securing in place a barrel or a stock. Some embodiments may include magazine mounts for M4 carbine type, AR rifle type or Model 1911 pistol type firearms.