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Posted: 4/26/2013 10:51:20 AM EDT
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The next build I have in mind ( I don't have to finish one before I start another, do I?) is a mid length XM177.
Very much like the one I have seen pictured so many times made by CrackedCornish. 
I am thinking of making my own slip over faux moderator out of aluminum. I found the original plans for the colt moderator and came up with outside dimensions. Here is the drawing I sketched out for my first attempt without slots. 
I still need to find the dimensions for the length of the threads. Next attempt will be a two piece version like CrackedCornish's that has fake slots. Seen in this thread. http://www.ar15.com/forums/t_3_123/521102_Midlength_barrel_question_plus_pic_request___middy_E1_builds.html Question for the machinists, how do you cut flash hider slots? This is the only post I could find on the subject. http://www.militaryfirearm.com/Forum/showthread.php?16403-Cutting-tapered-slots-in-your-flash-hider I have access to my friends machine shop but I like to have all my ducks in a row before I go over there so I don't wear out my welcome. |
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Quoted:
The only woodruff key cutters I can find are not tapered. I said I was just a dummy!... 
OK, in all seriousness, my local sharpening service (end mills, key cutters, reamers, drills, etc) will grind any profile I need on my end mills, reamers, etc...There should be a service in your area as well...They may even be able to provide the cutter... 
BTW: I make my XM607 moderators in the same manner as your sketch...Works great! 
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