Firearm with integrated lower receiver components

A firearm comprising:

• a frame having a barrel extending in a forward direction and defining a bolt passage configured to receive a reciprocating bolt assembly;
• the frame defining a magazine well;
• a bolt hold open element movably connected to the frame to the rear of the magazine well and configured to move between a protruding position operable to restrain the reciprocating bolt assembly rearward of the magazine well, and a retracted position operable to enable the reciprocating bolt assembly to move forward beyond a rear portion of the magazine well;
• an elongated link connected to the bolt hold open element;
• a forward portion of the elongated link extending forward of the magazine well and having an actuator portion extending above the magazine well and configured to be actuated by a magazine follower;
• the elongated link having a first elongated portion defining a link axis and received by the frame to rotate about the link axis;
• the elongated link having an arm extending laterally from the first elongated portion and having a free end movable between an elevated and lowered position;
• the free end of the arm including the actuator portion;
• wherein the elongated link is a rod having a circular cross-sectional profile;
• and
• wherein the entire elongated link has a circular cross-sectional profile.

A firearm comprising:

• a frame having a barrel extending in a forward direction and defining a bolt passage configured to receive a reciprocating bolt assembly;
• the frame defining a magazine well;
• a bolt hold open element movably connected to the frame to the rear of the magazine well and configured to move between a protruding position operable to restrain the reciprocating bolt assembly rearward of the magazine well, and a retracted position operable to enable the reciprocating bolt assembly to move forward beyond a rear portion of the magazine well;
• an elongated link connected to the bolt hold open element;
• a forward portion of the elongated link extending forward of the magazine well and having an actuator portion extending above the magazine well and configured to be actuated by a magazine follower;
• the elongated link having a first elongated portion defining a link axis and received by the frame to rotate about the link axis, the first elongated portion being constrained without relative movement with respect to the frame other than rotation;
• the elongated link having an arm extending laterally from the first elongated portion and having a free end movable between an elevated and lowered position;
• the free end of the arm including the actuator portion;
• and
• wherein the frame has a left side and a right side, and wherein the first elongated portion is left of the magazine well, and the actuator portion is above a right portion of the magazine well.