Description
Nitride Castle Nut
This is our standard AR-15 Mil-Spec carbine buffer tube/receiver extension castle nut treated by H&M nitride.
Features:
-4140 Tool Steel construction
-Nitride finish
-Fits: AR-15 or LR308 Buffer Tubes
Great addition to our Nitrided QD End Plate and our 8 Position Buffer Tube!
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