This video explains what adjustable gas blocks are, how they work, and why they’re useful for tuning rifles—especially when shooting different ammo or running suppressed. Justin walks through the proper method for adjusting a gas block, then covers maintenance best practices to prevent carbon lock. The video also demonstrates how to clean and service common adjustable gas block styles, including screw-adjust, PSA JAKL, and Riflespeed systems, with a recommended maintenance interval of roughly every 1,000 rounds.