CNP (Castle Nut Punch) is a dedicated castle nut staking punch, while it can do double duty as a golf tee or Van Helsing's EDC, it was designed for a singular purpose, that is to displace material from an AR15/M16 end plate into the castle nut's staking notches.
Machined from D2 steel, heat treated and finished in black oxide, CNP has a broad / flared top to provide a stable striking surface. It also has widely spaced and aggressive serrations to ensure the user's hands, gloved or ungloved, will not lose their grip.
CNP was originally designed to have a rectangular tip, it was subsequently abandoned, and we went to a round tip. A rectangular tip can be very unforgiving of tip placement, and the sharp edge and corners of a rectangular tip can be rapidly and more easily deformed and most importantly, we don't see any advantage of a square stake over a round stake a conventional punch produces. Given the host of problems a rectangular tip has and what it brings to the table (nothing), it was an easy decision to redesign CNP to have a round tip.
Proudly designed and made in the USA.
NOTE:
* Know your end plates. We advise that you find out how your end plate is treated. TDP spec end plate is made in 1018 or 1020 low carbon steel, and for good reasons. Nitrided end plates are very difficult to stake, we avoid nitrided end plates when possible, it's exceedingly and unnecessarily hard, and may blunt the punch's tip prematurely.
* If you're not familiar with staking castle nuts, please consult or bring it to a qualified gunsmith. If you ugga dugga and wield the mallet like Thor, you can risk punching through the end plate and damaging your receiver extension. We are not responsible for the consequences resulting from misusing and/or abusing of tools.
