Ruger AR-15 Upper Receiver Parts Kit

Everything on the front half of an AR-15 upper that tends to wander off or wear out, in one package: forward assist assembly, forward assist retaining pin and spring, ejection port cover, cover hinge pin, retaining clip and cover spring.

Two uses cover most buyers. One is building a stripped upper receiver from bare aluminum, where these are the small parts you need before a barrel goes on. The other is replacing a dust cover spring that finally gave up after a few thousand rounds of slamming shut. Ruger builds these to the spec used on their own AR rifles. They fit AR-15 pattern uppers, though tolerances vary across the market, so a test fit before final assembly is worth the minute it takes.