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Sniper AR-15/M16 Receiver Extension Mil Spec Castle Nuts
$4.99 $4.04 Save 19%
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Most Helpful Positive Review Nice product
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.
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its a castle nut

by Sumigeshi, Verified Owner from TN, United States Written on May 12, 2025
crazy as it sounds, this thing worked as it should
Would recommend: Yes
Was it helpful to you? Yes | No

good quality part

by Oregunner, Verified Owner from OR, United States Written on April 8, 2023
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 ¡!!!!!¡!!!!!!!!!!!!!!!!!!!!!!!!!!!
Would recommend: Yes
Was it helpful to you? Yes | No

Std Mil-Spec part

by GlassWolf, Verified Owner from SC, United States Written on February 7, 2018
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.
Pros:
  • Mil-spec parts
Cons:
  • None
Best Used for:
  • retaining butter tube
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

Heavy and rusty in package. Pretty sure this is not aluminum as stated.

by i3auer, Verified Owner from AZ, United States Written on November 25, 2017
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.
Pros:
  • Looks like a typical Steel Castle Nut
Cons:
  • Not as described.
Best Used for:
  • Cheap heavy rifle
Would recommend: No
0 of 6 found the following review helpful.
Was it helpful to you? Yes | No
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