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- Upper Hardware
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.
What this category includes
- Ejection port (dust cover) and forward assist components
- Individual springs in ten-packs and complete assembly kits
- Built to Mil-Spec dimensions for AR-15 and AR-10 uppers
- Black oxide coated springs and phosphate coated kits
- Knurled rod design; no C-clip required for dust cover install
- Forward assist kit with assembly, spring, and roll pin
- Combined upper parts kit bundling both assemblies
- Made in the USA springs
Frequently Asked Questions
The AR15 Upper Parts Kit Knurled is one of our upper hardware assemblies covering the small components used to complete an AR15 upper. Check the individual product page for the exact contents listed, and confirm the parts match your specific build before ordering.
It depends on the item. Our ejection port cover springs and forward assist springs are listed for both AR10 and AR15 platforms, while the dust cover kit, forward assist kit, and upper parts kit are listed for the AR15. Confirm your build's platform against the product title before ordering.
Both the AR10/AR15 Ejection Port Cover Spring and the AR10/AR15 Forward Assist Spring are sold in ten packs. These multi-packs are useful for builders and gunsmiths who go through replacement springs across multiple builds or repairs.
The AR15 Dust Cover Kit Knurled covers the ejection port cover assembly, while the AR15 Forward Assist Kit covers the forward assist assembly. Both are upper hardware items. If you want both plus additional components together, look at the AR15 Upper Parts Kit Knurled.
These are upper hardware components that install on the upper receiver. You can browse related items in our Uppers & Parts collection, or find pins and detents in Small Hardware. Confirm each part matches your build's spec before assembly.
Orders for upper hardware ship in 2-3 business days. Free shipping is available on qualifying orders. Add your items to the cart to see the shipping options that apply to your order before checkout.
Build on.
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