Castle Nuts
Castle Nuts
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This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
This is our standard AR-15 carbine buffer tube/receiver extension castle nut in matte black. It fits..
It fits commercial tubes only. Features:4140 Tool Steel constructionBlack anodized finishDiameter: ..