Leapers UTG Pro OPS Ready S1 Mil-Spec Stock Kit, Black Synthetic 6-Position - RBUS1BM

This is a complete mil-spec buttstock kit compatible with AR-15 and M16 platforms, constructed from polymer with an aluminum tube. The kit includes a 6-position adjustable stock, extension tube, buffer, buffer spring, tear-drop ring, and castle nut for a complete installation.