I use a Snap-On 3/16" center punch, it was spendy at $24 but works great. Only one hard whack and its golden.
https://store.snapon.com/Center-Punc...h-P634974.aspx
Last edited by CLee0509; 12-11-17 at 21:17.
The staking notches are too shallow based on what I am seeing for a proper staking. See this thread which will show you the correct style castle nut and how it should look.
https://www.m4carbine.net/showthread...lt-1-min/page2
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TDP specs have the width and angle (45 degree) of the stacking notches, OP's castle nut staking notch appears to have no angle (end mill cutting a groove only?) Instead of an angled notch, it's a flute lol.
The deformed material from staking can only "flow" into a shallow depression, not a TDP spec 45 degree angled notch at 0.084 width, so the tool used to perform the stake job in this case is irrelevant (an auto center punch is fine), the out of spec castle nut would be the culprit if the staking doesn't hold.
Last edited by Duffy; 12-12-17 at 09:47.
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