TacFire MAR039 Castle Nut Black Steel for AR-15 Buffer Tube
http://www.tandktactical.com/shop/811261021914-tacfire-mar039-castle-nut-black-steel-for-ar-15-buffer-tube-31317
http://www.tandktactical.com/web/image/product.template/31317/image_1920?unique=a0ca50e
TacFire Official AR15 Castle Locking Nut for .223/5.56 Rifle carbine stock used to tighten buffer tube to receiver.
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Shipping: 2-3 Business Days
