I have been buying a few tools here and there. I don't build a ton of ARs but when I do I need what I need. Also other routine maintenance can be substantially easier as well.

I bought a Real Avid Armorer's Master Vice and the Lug Lok Upper Vice Block for a total of $285 including shipping. Normal price for both items is right around $380 not including shipping. For both items it was basically over $100 off.

https://tacticalsurplususa.com/