Proud dad. Hope y'all had a blast. Happy Birthday to your boy!
For a lefty, would highly recommend taking a look at Geissele's Maritime Bolt Catch. They run sub-$25 during their holiday sales, maybe Labor Day next, and would make a great stocking stuffer. Discussed further in a somewhat recent thread started by Grendel.
If you don't already have an H1 buffer in there, take a look at picking up one of the the Geissele braided buffers as well. After you price at an H1 Buffer and a slightly stronger springco spring, you're about at the same price. And for use w/ red dots, I prefer their para ambi charging handle to the super. No experience with their newer gov't but seems a little too small.