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Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
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Posted: 7/24/2016 8:46:19 PM EDT
Im installing my 2nd BCM extended A2. The crush washers that came with both will not crush. The 1st I just tried a different washer and it crushed no problem. I have 2 other washers and they wont crush either. I know the original A1 FH were 22ftlbs. Both ext fh need more than 90deg to time and im afraid of stripping something. Both barrels are Colt SOCOM same 4/16 build date. Im using a rod that is inserted into the lugs on the barrel extension. I dont want to twist the barrel.
Link Posted: 7/24/2016 9:39:12 PM EDT
[#1]
I always use DPMS brand crush washers because they crush soooooooo much easier than the crush washers that come with comps and flash hiders.  I don't know if there is a such thing as a "mil-spec" crush washer but I have no idea why manufacturers use crush washers that are that damn hard to crush.
Link Posted: 7/24/2016 9:49:30 PM EDT
[#2]
ok thanks I should be able to get them from my local gun shop. all there ar stuff is dpms.
Link Posted: 7/25/2016 10:18:11 AM EDT
[#3]
Get some of > these < and be done with the problems associated with standard crush washers.
Link Posted: 7/25/2016 10:46:01 AM EDT
[#4]
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Quoted:
Get some of > these < and be done with the problems associated with standard crush washers.
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I saw where you posted about these in another thread.  I ordered some because they seemed like a good idea. Should be here this week.
Link Posted: 7/25/2016 11:18:36 AM EDT
[#5]
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Quoted:
Get some of > these < and be done with the problems associated with standard crush washers.
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ordered thanks
Link Posted: 7/25/2016 12:34:49 PM EDT
[#6]
Glad I could help guys.

I really didn't like the hit or miss quality of standard crush washers at all. So I'm pretty happy I found out about these "crush washers that actually work" from Armageddon Tactical.
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