The enforcer complete build kit is compatible wit your ar-15.It includes: 15" ultra-light m-lok handguard; enforcer oversized ambidextrous charging handle; forward assist; billet dust cover; enforcer ar pistol grip; oversized trigger guard; ambidextrous safety; extended magazine release; takedown pins; qd end plate; buffer tube; low profile.750 gas block; 223 heat breaker.Model: EnforcerSafety: AmbidextrousHand: Ambidextrous