1 review for MDT Castle Nut
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Roger McDavid –
Not really sure if this is meant for AR-15s, but you could probably use it on one. It's a little wider than most castle nuts. I used it on my Ruger 10/22 along with a folding stock adapter and carbine buffer tube. The finish is excellent. It's also a precision machined item, so the threading is super nice and the cuts for wrench are perfect. I highly recommend this product for any builds you may have.