An inertial mechanism including an activating mechanism and a time delay mechanism coupled to the activating mechanism for delaying a time in which the activating mechanism is activated after a predetermined acceleration profile occurs. Where a coupling of the time delay mechanism with the activating mechanism to activate the activating mechanism initially moves away from the coupling when the predetermined acceleration profile occurs before the coupling occurs after a time delay.

An inertial mechanism including an activating mechanism and a time delay mechanism coupled to the activating mechanism for delaying a time in which the activating mechanism is activated after a predetermined acceleration profile occurs. Where a coupling of the time delay mechanism with the activating mechanism to activate the activating mechanism initially moves away from the coupling when the predetermined acceleration profile occurs before the coupling occurs after a time delay.

A hook for deploying a pin-and-lever detonation device, such as a flash bang grenade, and a method for use of the hook, is disclosed. The hook includes a base for attaching the hook to the side of a firearm, such as at a hand guard, grip, body, or accessory rail. It further includes an arm extending substantially laterally from the base. A recess is defined between the base and the arm, structured to receive a pull-ring of the pin-and-lever detonation device and provide leverage for a user pulling the pull-ring. A lip is formed at an end of the arm, structured to curve away from the arm and guide a pull-ring of the pin-and-lever detonation device into the recess. The disclosed hook enables an operator to deploy a grenade one-handed while simultaneously keeping his firearm readily available and covering his own person.

A hook for deploying a pin-and-lever detonation device, such as a flash bang grenade, and a method for use of the hook, is disclosed. The hook includes a base for attaching the hook to the side of a firearm, such as at a hand guard, grip, body, or accessory rail. It further includes an arm extending substantially laterally from the base. A recess is defined between the base and the arm, structured to receive a pull-ring of the pin-and-lever detonation device and provide leverage for a user pulling the pull-ring. A lip is formed at an end of the arm, structured to curve away from the arm and guide a pull-ring of the pin-and-lever detonation device into the recess. The disclosed hook enables an operator to deploy a grenade one-handed while simultaneously keeping his firearm readily available and covering his own person.

An inertial mechanism including a member rotatable about an axis between activatable and activated positions, in the activatable position a first center of mass of the member is offset from the axis in a direction perpendicular to a direction of acceleration, the member having a surface; and another member rotatable about an axis between rest and activated positions, the rest position being where the second member cannot be moved into its activated position from an acceleration event, the other member also having a surface, the surfaces engage with each other when the member moves to its activated position to move the other member from its rest position to its activatable position, which is also where a center of mass of the other member is offset from its axis in the direction perpendicular to the direction of the acceleration.

An inertial mechanism including a member rotatable about an axis between activatable and activated positions, in the activatable position a first center of mass of the member is offset from the axis in a direction perpendicular to a direction of acceleration, the member having a surface; and another member rotatable about an axis between rest and activated positions, the rest position being where the second member cannot be moved into its activated position from an acceleration event, the other member also having a surface, the surfaces engage with each other when the member moves to its activated position to move the other member from its rest position to its activatable position, which is also where a center of mass of the other member is offset from its axis in the direction perpendicular to the direction of the acceleration.