Firearm positioning systems and methods

A firearm positioning system comprising:

• a first arm segment pivotably engaged to a primary body;
• a second arm segment pivotably engaged to the first arm segment;
• a cradle pivotably engaged to the second arm segment, the cradle configured to support a firearm and a container, the cradle comprising:
• a removably engaging attachment mechanism positioned at a first end of the cradle, the removably engaging attachment mechanism configured to receive and removably engage a front end of the firearm;
• a backstop assembly at a second end opposite the first end, the backstop assembly configured to releasably secure a back end of the firearm to the cradle;
• an elevation pin configured to releasably lock a vertical range of motion of the cradle relative to the second arm segment;
• and
• at least one rail.

A method for replacing a first firearm with a second firearm comprising:

• configuring a first arm segment to engage a primary body about a first axis, the first arm segment rotatable about the first axis relative to the primary body;
• configuring a cradle to support the first firearm and a container holding a plurality of first ammunition rounds, the cradle pivotably coupled to a second arm segment, the second arm segment pivotably coupled to the cradle at a first end of the second arm segment and pivotably coupled to the first arm segment at a second end of the second arm segment, the cradle having a pair of channels, a first end of the cradle to receive a front end of the first firearm and a backstop assembly at a second end of the cradle to releasably secure a back end of the first firearm to the cradle, wherein the first firearm is different from the second firearm, wherein the backstop assembly comprises a post, a pin movable from a first open position to a second closed position, and a biasing element configured to bias the pin;
• releasing the backstop assembly and removing the first firearm from the cradle;
• replacing the plurality of first ammunition rounds with a plurality of second ammunition rounds in the container, wherein the plurality of first ammunition rounds and the plurality of second ammunition rounds are different;
• and
• configuring the cradle to support the second firearm.

A pin assembly to selectively secure a first object to a second object, the pin assembly comprising:

• a first housing, including:
• a first body;
• a first extension extending from the first body, the first extension comprising a first outer surface which is threaded and configured to engage a first threaded bore extending through a first arm of the second object;
• a first bore extending through the first body and the first extension;
• and
• a threaded aperture extending through the first body to the first bore;
• a pin, including:
• a head;
• a shaft extending from the head, the shaft selectively extendable through the first bore;
• and
• a groove in the shaft, the groove comprising a locking groove portion extending transverse to a longitudinal axis of the shaft and a sliding groove portion extending approximately parallel to the longitudinal axis, wherein the shaft has a first position in which the head is spaced from the first body, and wherein the shaft has a second position in which the head is proximate to the first body;
• a biasing element selectively engaged with the first housing and the pin, wherein biasing element biases the shaft into the first position;
• and
• a set screw selectively engaged to the threaded aperture and extendable into the groove of the pin to couple the pin to the first housing,
• wherein in an open position of the pin assembly, the shaft of the pin is in the first position with a free end of the shaft spaced from a second arm of the second object to permit the first object to be received between the first and second arms, and
• wherein in a closed position of the pin assembly, the shaft of the pin is in the second position and the free end of the shaft extends toward the second arm to secure the first object between the first and second arms.