Castle Nuts

Castle Nuts

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AR-15 Buffer Castle Nut

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-Burnt Bronze

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-FDE

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-OD Green

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-Pink

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-Red

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut Cerakote-Robins Egg

This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..

AR-15 Buffer Castle Nut - For Commercial Tube "AS IS" SALE

It fits commercial tubes only. Features:4140 Tool Steel constructionBlack anodized finishDiameter: ..