Aero Precision M4E1 build list. M4E1 upper 18" barrel. 223Wylde 15" Rifle length upper. Ambi C.H. Nickel Boron BCG. M4E1 lower. Daniel Defense parts kit. Geissele SSA Trigger. Vlto Emod Stock with an ADM AD-RECON 30mm SD lever Cantilever Scope mount Weaver Classic extreme 30mm scope. 1.5-4 24mm. Like New. Total build cost $2080. Consignment $1299. Nice build!