CN5F (Castle Nut, A5, Forward Controls) is an extended version of CNF, designed specifically for the Vltor A5 system. CN5F is 0.1" longer, allowing more coverage of buffer tube threads while retaining backward copatibility, as well as the stocks ability to fully collapse when using A5 style reciever extensions.
CN5F (Castle Nut, Forward Controls) is based on the TDP spec castle nut, with couple of changes:
1. 0.1" longer.
2. Staking notches angle changed from 45 to 30 degrees, this results in longer (25% 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.
- Designed for A5 style receiver extensions
- 4140 PH steel construction
- 25% longer staking notches
- Made in the USA
