Elite force ARX-160 proline Blowback currently disabled but can be reenabled Factory long barrel and oem drop in short barre. Quick change spring Oem high cap (not pictured) Bought as a back up but no longer have a need for it. Rifle has no issues besides a crack where the lower and upper meet. Crack has been reenforced and should pose no problems. Feel free to message with questions. Thanks!