Upper Hardware

AR-15 and AR-10 Upper Receiver Hardware and Springs

This Upper Hardware category covers the small components that complete an AR-15 or AR-10 upper receiver. It includes ejection port cover springs and forward assist springs in ten-packs, plus dust cover kits, forward assist kits, and a complete AR15 Upper Parts Kit Knurled for upper receiver assembly. These American-made, mil-spec parts suit individual builders, gunsmiths restocking common wear items, and manufacturers sourcing in volume.

When selecting upper hardware, confirm compatibility with your AR-15 or AR-10 platform and decide whether you need an individual spring, a single kit, or a bulk ten-pack for repeated builds and repairs. Knurled options are available within several kits.

Pair these components with related parts from the broader Uppers & Parts selection, or browse additional pins and springs in Small Hardware to round out your build.