Aero Precision Fix-It Kit AR Platform is a dedicated small-parts kit designed to replace commonly lost hardware during an AR-15, M4E1, or M5 build or teardown. It supplies the detents, springs, pins, retainers, and selector/disconnector components needed to keep your build moving and your controls operating as intended.
Key Features
Supplies safety selector springs/detents plus buffer retainer components
Compatible with AR-15, M4E1, and M5 builds
Includes takedown pin detents and springs, trigger/hammer pins, and bolt catch roll pins
Convenient replacement/completion kit for common AR build small parts
Includes disconnector springs and 4-40 set screws for threaded takedown pin detent holes
Keep a Fix-It Kit on hand for quick repairs and smoother builds—get the missing parts you need without hunting them down individually.
