Good job on your first build.
Now you know what tools you will need for the next built.
Go to
https://www.brownells.com/gunsmith-tools-supplies/index.htm?avs%7CMake_3=AR-15
If I may also suggest, unless you already know:
- Sweets 762 bore cleaning solvent. Has ammonia in it so be aware of ventilation.
- One-piece cleaning rod. Multi-piece rods can scratch the bore if the junctions don't align perfectly.
- Jags, brushes, patches to fit the bore. An AR-15 chamber cleaning brush.
- Kroil penetrating oil. Great product for getting under stubborn dirt and such in the bore
- Break-Free lubricating oil. Great stuff for pivoting parts
- Moly grease for those surfaces that rub together. Just a dab.
- Even Brake Kleen spray cleaner for disc brakes. This can blow out loose stuff in the bore before you go after the tough stuff.
- Air compressor and accessories.
Cheers.