The new Elite Force 4CRL by VFC is designed for the airsoft milsim player that wants to run a large type battery for a weekend operation. This gun shoots 400 FPS and is completely LIPO ready. The 4CRL is the big brother to our 4CRS which was designed for CQB style game play. The full metal rail system, upper rail, includes metal quality flip-up front/rear sights (or add your own optics), and SPR style flash hider. VFC makes incredible guns, so be sure to check this out if you want a high-end gun.