This is the Slide Fire system that simulates Full Auto for your rifle. It replaces your current stock and pistol group for your AR-15 styled rifle. The SSAR-15 provides individuals the ability to Bump Fire more safely. The operator can hold the rifle correctly without compromising their own safety or the safety of others around them. Unlike when bump firing from the hip, the SSAR-15 allows the shooter to properly aim the firearm.