Now your Smith & Wesson M&P15-22 handguard can match the look and feel of your existing AR platform. The thread adapter converts your "non-removable" handguard to any standard threaded AR-style handguard. This adapter is a high-quality engineered item fits perfectly on your Smith & Wesson M&P15-22. It has the added benefit of being a heat-sink. It helps pull the damaging heat away from the chamber and feed