Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Olive Drab Green CN5F ODG
Forward Controls Design · Buffer Tubes & Springs
No ratings yetBest price
$32.30at Brownells
In stock checked Oct 31, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price | $32.30checked Oct 31, 2026 | In stock | Buy at Brownells | |
| OpticsPlanet | $33.99Salechecked Oct 31, 2026 | In stock | Buy at OpticsPlanet | |
| Palmetto State Armory | $32.29Salechecked Oct 18, 2026 | Check store | Buy at Palmetto State Armory |
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: $32.30 at Brownells. Dashed line = out of stock. Tracking since Oct 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $32.30 | $32.30 | $32.30 |
| OpticsPlanet | $33.99 | $33.99 | $33.99 |
Since Oct 27, 2026.
About this part
The Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Olive Drab Green CN5F ODG is a buffer part from Forward Controls Design. It's sold by 3 stores (2 in stock), from $32.29 to $33.99. The lowest in-stock price in the last 30 days was $32.30 at Brownells.
Fits and works with
- Buffer system
- A5 · Buffers and springs
Specifications
- Manufacturer
- Forward Controls Design
From the manufacturer
Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Olive Drab Green CN5F ODG. CN5F is designed specifically for the superb Vltor A5 system. CN5F is 0.1in longer and is as long as we can make a castle nut while ensuring backward compatibility and the stock's ability to fully collapse on Vltor's RE-A5 and our RE5F. CN5F aims to cover as much of the threaded area of a receiver extension (RE) as possible. It could be made longer but it will run into backward compatibility issues with some REs' timing when installing the castle nut and end plate on the RE. CN5F is made specifically for the Vltor A5 system and it will allow even the longest carbine stocks to fully collapse on RE-A5 and our RE5F. While CN5F will also work on standard TDP spec length RE the additional length of the castle nut will prevent the carbine stock to fully collapse. Other than its length CN5F shares common features with its smaller brother CNF. The TDP spec castle nut is a simple and robust fastener that is almost perfect for the job it's tasked to perform. Over the years we've consistently come up with two minor gripes first is its staking notches seem rather shallow and short second is we don't enjoy using the castle nut's wrench notches as serrations (our fingers invariably find their way to these sharp cutouts) to rotate it towards to the end plate while installing it. CN5F (Castle Nut Forward Controls) is based on the TDP spec castle nut with couple of changes: 1. 0.1in longer. 2. Staking notches angle changed from 45 to 30 degrees this results in longer (25percent longer than TDP spec) and deeper notches than found on TDP castle nuts. 3. Number of staking notches increased from 3 to 4 spaced equally on the CNF. The castle nut is to be staked in two places we're not advocating staking in more than two places CNF's 4 staking notches mean that at all times 3 will be visible and available for staking it simply gives the user more staking location options. 4. Coarse serrations on the wrench side of the nut a single use feature to make it easier while rotating the CNF towards the end plate. Specifications for Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE: Manufacturer: Forward Controls Design Fabric/Material: 4140 Steel Features of Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Four total 25percent longer staking notches Coarse serrations for easy installation Package Contents: Forward Controls Design CNF Billet Machined Castle Nut for A5 Length RE Forward Controls Design CN5F ODG: CNF Billet Machined Castle Nut for A5 Length RE Olive Drab Green
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