Carbines are kind of like Legos and if you’re like me, you have several uppers and lowers that can be combined to make different rifles. A few months ago Raven Concealment Systems handed me an oddly shaped piece of plastic. I turned it over and quickly realized what it was for. If you own a bunch of uppers, then you definitely need some of these.
The TopStop is a one-piece, snap-on cover for the upper receiver of a 5.56mm AR upper receiver. It is injection molded from high-strength nylon. It attaches over the bottom and rear of the upper receiver when the rifle is broken down, and keeps the charging handle and bolt group from sliding out of the upper. It also helps keep the dirty lube from dripping out of the upper and all over your hands and rifle case, as well as preventing dirt, sand, and other debris from getting into the receiver.
The TopStop is especially handy for shooters using HK 416’s, because of how easily the bolt group can spill out of the back of the receiver when breaking down the rifle for transport. In fact, if you let most uppers bounce around in a bag long enough, the BCG is coming out.
Like all RCS products, the TopStop is 100% U.S.-made, and is covered by their unconditional lifetime guarantee.
The TopStop costs $9.99. It is in stock and shipping now, and can be ordered from RCS.
