Lower receiver, ready for a build:
Magazine release in place.
Bolt release in place. This is one of the more difficult parts to assemble, in my opinion. You must compress a screw, then drive a pin through a hole between two ears, while compressing the spring.
Detent and hinge pin in place. This is one of the more difficult parts, too, as the detent and detent spring tend to launch out of here, never to be seen again. In this build, I had no trouble with this part.
Grip and selector switch in place.
Buffer tube, buffer and buffer stop in place.
Trigger and hammer in place.
Thank you for reading my post.