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11/22/2017 10:05:29 PM
Posted: 10/8/2004 11:41:34 PM EST
I just bought one, but are they the standard threading like the A2 & A1 FS's? Second whats this I hear about them making a pinging noise when you shoot?
Link Posted: 10/9/2004 12:27:51 AM EST
They are standard threads, 1/2 x 28. They make a ringing noise when fired, it isn't a big deal.
Link Posted: 10/9/2004 6:18:21 AM EST
[Last Edit: 10/9/2004 6:18:58 AM EST by manowar669]
Damn, I didn't hear about the ringing, but the first time I shot the re-barrelled upper (w/vortex type FS), I heard a distinct ringing. I was the only one at the range. I just thought I didn't have my earplugs in all the way, and I was having too much fun to adjust them, but I bet it was the FS.
Link Posted: 10/9/2004 10:43:59 AM EST

Originally Posted By 223semiauto:
Second whats this I hear about them making a pinging noise when you shoot?


I've neverr heard it at the range because I've got hearing protetion on, but after you install the vortex lock the bolt carrier to the rear then hit the release letting it slam forward and you'll know all you need to about the ringing.
Link Posted: 10/9/2004 10:46:45 AM EST
It sounds like a tuning fork. Just consider it the sound of freedom.
Link Posted: 10/9/2004 1:00:11 PM EST
Dogs everywhere for miles will be cocking their heads sideways and perking their ears

Link Posted: 10/9/2004 1:36:43 PM EST
[Last Edit: 10/9/2004 2:26:59 PM EST by Marksman14]

Originally Posted By Bradd_D:
It sounds like a tuning fork. Just consider it the sound of freedom.



Deadliest tuning fork in the world...thats for sure.
Link Posted: 10/9/2004 2:55:38 PM EST
The Vortex thread patterns for the M-4/M-16 are standard thread appropriate for those arms. The M249 variant has the appropriate htread relief for the SAW. Same goes for the M-240 version, BTW. As to the "pinging" noise, frankly, I've never noticed it in many thousands of rounds fired in both semi and FA and in bbl lengths from 9.5" to 20". then again, that's probably why I don't hear of all things...pinging.
Link Posted: 10/9/2004 2:57:33 PM EST
It rings if you bump it into something too.
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