The Andro Corp Industries ACI-15 is an incredible and rock-solid AR-15 pistol chambered in .223/5.56. This pistol comes with a smooth pistol length buffer tube and buffer/recoil spring combination tuned to cycle a wide variety of ammunition reliably. This model features a 6" inch barrel that is incredibly maneuverable, making it ideal for home defense or keeping inside a vehicle concealed. An M-LOK rail is also ready to accept any accessories of your choosing. The upper and lower receivers are machined from billet aluminum allowing for a higher degree of customizability for look and function. This model also comes standard with an A2 flash hider and an adjustable SB Tactical SBA3 brace.