I will include both rails, original FBI HRT rail along with C4 quad rail. It’s only using quality internals from Triarc or geissele. The integrated a1 is a 70’s upper from a colt A1. It’s a 10.5 chrome lined rosco. Was a little labor of love I put together. Trigger might be a larue or geissele gotta double check. Aimpont T1, Surefire Vampire, and the stock folder are all included. Suppressor won’t be.