Those who've shot a suppressed AR-15 understand the concept of blowback, and manufacturers like Radian Weapons are developing enhanced components designed to deal with the issue. The company's Raptor-SD-SL charging handle features a special vented shaft that makes gas blowback a non-issue in your AR-15. Each Radian Weapons Raptor-SD-SL charging handle features a ported shaft that redirects gas, so you won't experience blowback coming directly into your face. The charging handle also features a low-profile handle conducive for "blading" the handle with one hand for rapid charging.