LAUGO ARMS ALIEN IPSC RETROFIT KITReplacement Slide and Upper Rail for IPSC Production Optics use. Red Dot not included. This Retro Upgrade Kit slide for the Alien pistol by Laugo Arms, provides the possibility to alter the Alien pistol, ready for use in the IPSC Open Optic division. It features a red dot mounting base that is fixed to the reciprocating slide, which causes the red dot to reciprocate as well, compliant to IPSC guidelines. NOTE : OPTIC NOT INCLUDED