Fall Build Fest Continues - 15% OFF GUN PARTS THIS WEEK
Use Code: PARTS15

Fall Build Fest Continues - 15% OFF GUN PARTS THIS WEEK
Use Code: PARTS15

AR-15 Billet Castle Nut Black
AR-15 Billet Castle Nut Black
AR-15 Billet Castle Nut Burnt Bronze
AR-15 Billet Castle Nut Burnt Flat Dark Earth
AR-15 Billet Castle Nut Burnt OD Green
AR-15 Billet Castle Nut Black
AR-15 Billet Castle Nut Black
AR-15 Billet Castle Nut Burnt Bronze
AR-15 Billet Castle Nut Burnt Flat Dark Earth
AR-15 Billet Castle Nut Burnt OD Green
None
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FORWARD CONTROLS DESIGN LLC - AR-15 Billet Castle Nut Burnt Flat Dark Earth

3 Reviews
Color
AR-15 Billet Castle Nut Burnt Flat Dark Earth
Brownells #
100044405
MFR #
CNF (CASTLE NUT
UPC
680665827251
$28.50
Coupon Code
Purchase Limit Help

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Standard Shipping Estimated Delivery
Estimated delivery: Oct 19
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Specifications
Item Weight (lbs):
0.040
Make Model Fit:
AR-15.Universal;AR-308.Universal
Color:
Flat Dark Earth
Item Width (Inches):
1.370
Item Height (Inches):
0.370
Item Length (Inches):
1.370
Material:
Aluminum
Restriction
Gun Part Restrictions:
Yes
Prop 65 restriction:
WARNING: This product can expose you to chemicals including metallic nickel, chromium and lead, which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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What is the FORWARD CONTROLS DESIGN LLC - AR-15 Billet Castle Nut Burnt Flat Dark Earth?

The TDP spec castle nut is a simple and robust fastener that is almost perfect for the job it's tasked to perform. CNF (Castle Nut, Forward Controls) is based on the TDP spec castle nut, with now 4 staking notches that are longer and deeper (30 degrees notch vs. TDP castle nut's 45 degrees) and coarse serrations on the wrench side of the nut. The CNF has longer and deeper notch that once installed and staked, will not loosen without the user's deliberate action. CNF is billet machined in 4140 PH steel, and black nitrided. As with everything Forward Controls Design produces, it is proudly made in the USA.

  • 4140 billet steel
  • AR15M16 castle nut
  • Improved staking notches
  • Color: Black, Burnt Bronze, FDE, OD Green

See all of our AR15s and AR15 parts here.

Gun Part Restriction
Gun Parts have restricted shipping to CA.

Prop 65WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov

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AR-15 BILLET CASTLE NUT REVIEWS

5.0
3 Reviews
5 Stars
100%
4 Stars
0%
3 Stars
0%
2 Stars
0%
1 Stars
0%
5
Great castle nut
I have one of these on all my rifles. It's well made and looks great.
by BENJAMIN D. on April 09, 2026
Verified Purchase
Was this review helpful? 0
5
Shiny
Works as intended and fast shipping. Definitely a fancy version of a castle nut
Would you recommend this? Yes, I would recommend to a friend
by Ronald D. on February 22, 2025
Verified Purchase
Was this review helpful? 0
5
Works perfect
I used it to secure my buffer tube and my ambi sling attachment to my receiver and buffer tube
by Quizz on July 22, 2021
Was this review helpful? 3
Customer Questions
0 Questions