Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Black
$23.99 at OpticsPlanet · 5 stores
In stock Sale
AR-15 Billet Castle Nut Burnt Bronze
Forward Controls Design · Buffer Tubes & Springs
No ratings yetBest price
$24.23at Battlehawk Armory
Sale checked Oct 6, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Battlehawk Armory Best price | $24.23Salechecked Oct 6, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $27.49Salechecked Oct 4, 2026 | Check store | Buy at Palmetto State Armory | |
| AR15Discounts | $28.50checked Nov 10, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $28.50checked Nov 10, 2026 | Check store | Buy at Dirty Bird | |
| Brownells | $28.50checked Nov 10, 2026 | Out of stock | Buy at Brownells | |
| Ammunition Depot | $29.49checked Oct 6, 2026 | Out of stock | Buy at Ammunition Depot | |
| OpticsPlanet | $29.99Salechecked Nov 10, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $29.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $28.50 | $28.50 | $28.50 |
| Ammunition Depot | — | $29.49 | $29.49 |
| Battlehawk Armory | — | $24.23 | $24.23 |
| Brownells | $28.50 | $28.50 | $28.50 |
| Dirty Bird | $28.50 | $28.50 | $28.50 |
| OpticsPlanet | $29.99 | $29.99 | $33.49 |
| Palmetto State Armory | — | $27.49 | $27.49 |
Since Sep 28, 2026.
About this part
The AR-15 Billet Castle Nut Burnt Bronze is an AR-15 buffer part from Forward Controls Design. It's sold by 7 stores, from $24.23 to $29.99. The lowest in-stock price in the last 30 days was $29.99 at OpticsPlanet.
Specifications
- Manufacturer
- Forward Controls Design
- Platform
- AR-15
- Material
- Steel
From the manufacturer
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 Mfg: Forward Controls Design
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