Top: Barrel with twin lugs at the rear and recoil buffer spring. Bottom: Frame with two slots to hold the barrel. The recoil buffer block is stamped with a star and rests on the disconnector cradle.
Top: Slide with raised portion that activates the disconnector. Bottom: Frame with recoil buffer block on top of the disconnector cradle. You can see two tabs of the disconnector cradle on either side of the