Pretty sure its Ballistic advantage hanson profile barrel, midwest quad, magpul dust cover and Primary arms Slx 3x micro prism, have the p.a offset plate for mos footprint optics, most have rmr/mos plates included. Shoots like a dream,no malfunctions ever. Will include Bcg and charging handle. Need it gone asap, open to trades as well selling it straight up. Feel free to ask any questions needed, perfect suppressor host!