This is a LRBH 9mm AR from Aero Precision. Takes Glock mags. It’s got a 4.5” aero ballistic advantage barrel. Aero BCG. The aero hand guard is 8” to accommodate a suppressor (suppressor in photos not included). Aero trigger, aero BREACH ambi charging handle. SI enhanced pistol grip. Lee Precision 5.4oz buffer. KAK shockwave buffer tube and brace. 30 rnd Glock mag. 200 rounds through it. Selling to fund a new baby or I wouldn’t get rid of it. This is a great gun. Fun and easy to shoot.