That's why this is in the funny pic thread and not in the gunsmithing forumTechnically that would make the ar a non delayed blow back action with a nonoperative gas system. Given the power of 556/.223 you would have exploding brass jamming your ejection port and disintegrate your buffer.
The only way to convert an ar 15 to full auto is to re drill the lower add an automatic sear , a 3 position selector lever and an m 16 hammer.