MK18 ish type build. Back to front: SIG Tread ambi ch, Lantac M-Spec NiB BCG, Matech rear sight, Aimpoint PRO, Knights Armament RIS 06 Manufactured rail and panels, Knights Armament Vero Beach foregrip, Streamlight ProTac Rail Mount HL-X Pro light with knock off Amazon pressure pad (works but the light or the connector needs to be trimmed for it to completely seat). Suppressor and mount NOT included, will install the A2 flash hider. Upper and barrel are PSA (Originally a PA-18 upper but almost everything was changed). Decently accurate, has had around 600 rounds through it. Half semi and half three round burst from Atrius/CARL trigger. Well over $1550 invested in the upper, looking for $1250 cash or can remove the optic for lower price. Please call/text 406 two won seven 6083 if interested. Just gauging interest. All Knights Armament parts are genuine. God Bless!