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.