Abstract: The present invention is for a rear takedown pin and a bolt catch for use in a firearm such as an AR-15. The rear takedown pin has an elongated recess, a track, a slot, and a spring along an elongated cylindrical body that allows an upper and lower receiver of a firearm, such as an AR-15, to disengage, while the pin remains in the upper and lower receiver holes, thereby allowing a user to quickly replace a magazine without the barrel of the firearm rotating away from the preset aimed position. The invention also includes a bolt catch that allows a user to toggle a release to keep a bolt in its open opinion as well as provides a retractable pin that complies with magazine release lock regulations so a user can quickly replace a spent magazine.

Abstract: The present invention is for a rear takedown pin and a bolt catch for use in a firearm such as an AR-15. The rear takedown pin has an elongated recess, a track, a slot, and a spring along an elongated cylindrical body that allows an upper and lower receiver of a firearm, such as an AR-15, to disengage, while the pin remains in the upper and lower receiver holes, thereby allowing a user to quickly replace a magazine without the barrel of the firearm rotating away from the preset aimed position. The invention also includes a bolt catch that allows a user to toggle a release to keep a bolt in its open opinion as well as provides a retractable pin that complies with magazine release lock regulations so a user can quickly replace a spent magazine.