If you've ever run a suppressed AR-15 and felt a puff of gas in your face, noticed the bolt slamming back harder than usual, or ended up with a filthy receiver after a single range day, you already know the problem. Suppressors change how your rifle breathes. The fix is usually an adjustable gas block, and the payoff comes from tuning it correctly. This guide walks through exactly how to tune an adjustable gas block to your suppressor, step by step, so your rifle runs smoother, cleaner, and more …