The HIPERTOUCH® 24 fire-control drop-in is a high performance, high precision, service rifle upgrade that installs in AR-15® and AR-10® type rifles. The HIPERTOUCH® name is short for HIgh PERformance TOUCH and 24 for user adjustable trigger weights between 2 and 4 lbs. It’s the “AR” fire-control upgrade we’ve all dreamed of.