SPECS:
Ejection Port Cover - 1045/1055 cold-rolled carbon steel, Parkerized, black. Fits standard .223/5.56mm AR-15 upper receivers. Ejection cover latch detent and spring installed; hinge pin, spring, snap ring required (sold separately). Not for use on Rock River Arms 9mm or Uramex .22 LR. Oversized Magazine Release - Machined 6061 T6 aluminum, hardcoat anodized, matte black. Approximately 5⁄8" (1.6cm) long, with 5⁄8" diameter pad. Fits AR-15/M16 with mil-spec magazine release. Extended Takedown Pins - 6061 T6 aluminum, hardcoat anodized, matte black. Sold as a set with the same logo on both pins. Pins fit mil-spec receivers with .250" (6.3mm) diameter pivot/takedown pin holes.