Anderson Manufacturing AR-15 Buffer Tube Castle Nut
Details
Details
Features:
- Mil-Spec dimensions for AR-15 buffer tubes
- Manganese Phosphate finish
- Wrench cutouts for installation
- Cutout for staking
- Manufactured in the United States
The AR-15 castle nut gets its name from the castle turret like cutouts that allow a castle nut wrench to slide in and allow you to torque the castle nut down. In general, it is recommended that you torque your castle nut to 40 ft/lbs and do not use thread locker on these threads as that will give you inaccurate torque measurements. The wrench cutouts will face away from the receiver and a smaller cutout will be on the side that faces the receiver and sits flush with the end plate. Using a hardened punch, place the tip on the edge of the end plate and lightly tap it with a hammer to deform the metal into the cutout on the castle nut. This will prevent your castle nut from backing off the threads over time while still allowing you to use a wrench and remove it for maintenance if necessary.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
Ratings & Reviews
40 reviews
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by Scott Richard
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Anderson Manufacturing parts are A-1
by R. Kim Woodman
As always, the Anderson Manufacturing parts are A-1..
OK
by A H Britt
as expected
Fits perfectly.
by Carlito Pedida
Bought this along with the other buffer parts. Put them together and they worked perfectly. Can't go wrong with Anderson Manufacturing.
Castle nut
by Charlie Brennan
Excellent quality, fast shipping, great customer service
Great product and super fast shipping!
by Robert Jacobsen
Great product and super fast shipping!
Prompt service, great price, expensive shipping!
by T.l Chambers
I was very impressed with the prompt service. Great prices but the shipping options were all very expensive; ie. shipping cost was $5 more than the 2 items i purchased. Primary Arms was the only site that i could get botha mil spec castle nut and mil spec end plate.
it works
by Allen Sam
It's a castle nut.
nice
by V. R.
nice fit and finish. works perfectly with buffer tube
Works great
by Bradley Bond
No problems here. Cheap and works well.