AR-15 223/5.56/.308 Receiver Extension Castle Nut for Mil-Spec, Commercial and Pistol Buffer Tubes. Precision machined from Chrome Steel. Specifications for Sniper AR-15/M16 Receiver Extension Mil Spec Castle Nuts: Manufacturer: Sniper Gun Model: M16, AR-15 Condition: New Color: Black Fabric/Material: Chrome Steel Quantity: 1 Features of Sniper AR-15/M16 Receiver Extension Castle Nut, Mil Spec: Steel castle nut Package Contents: Sniper AR-15/M16 Receiver Extension Castle Nut, Mil Spec
4 reviews for Sniper AR-15/M16 Receiver Extension Mil Spec Castle Nuts
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Chris –
Not much to say about a castle nut. Inexpensive, threaded on to my Strike buffer tube easy and, fit the standard castle nut wrench correctly. Don’t overspend on at his part, this one works great without a big price tag.
GlassWolf –
Standard Mil-Spec buffer tube castle nut, or receiver extension tube nut. Threaded smoothly, didn't mar easily, staked well, no issues. When installing, I suggest using some anti-seize, or a drop or two of oil on the threads to ease the threading process and prevent galling of those threads on the lower receiver, the receiver extension tube, and the castle nut itself.
i3auer –
Weighs the same as my steel castle nut that is almost identical. All my other Aluminum parts weigh nothing compared to this, so if it is as described, it should weigh much less. Feels like steel and surprised they'd ship something that's starting to show signs of rust in the bag.
Oregunner –
This castle nut is of good construction and oxide finish. Fit my receiver tube fine. Its a light black oxide, mil-spec type finish. Cant really ask for more. Would buy again ¡!!!!!¡!!!!!!!!!!!!!!!!!!!!!!!!!!!