AR-15 ejection port dust cover, which installs easily with a spring-loaded hinge instead of an e-clip. It requires no tools to install, and can be done in about 5 seconds. Removal can be done just as quickly using a small pick or similar tool. Stop spending time and effort with difficult or tedious clips and add this no-brainer item to your cart!
Where have these been for my entire AR-building career? As advertised... took a whole 5 seconds to install. No more messing with that damn tiny C clip! I'm buying more of these.