The Raven Concealment TopStop snaps onto most AR-15 or M4 upper receivers when they are separated from the lower. It seals the upper so fouling can't get in or out, and it keeps the bolt carrier group and charging handle from sliding out while you move the upper around. Made from tough polymer.
- Type: Upper receiver cover
- Fits: Most AR-15 and M4 uppers (detached from lower)
- Material: Polymer
- Function: Seals upper, retains BCG and charging handle
- Color: Gray
- Manufacturer part #: TOPSTPWG
