LMT Defender 2000, 5.56mm cal. auto carbine. Serial #LMT54880. New in the box and unfired. One of the best M4 carbines made. 16” M4 profile with 1/7 twist barrel. Matte black finish.  MagPul MOE vertical grip.  Six-postion SOPMOD stock. Ergo grip. LMT detachable rear sight. F marked front sight. 30-rd. magazine, sling and factory box with paperwork are included. These are beautifully built and run great! Every household needs one of these!