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Posted: 8/14/2004 10:39:33 AM EDT
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Crush Washer, Which side is toward the front or against the flash hider? Thank You |
I tried that. Wouldn't crush down at all. I couldn't turn it more than 5 degrees. I turned it around and put the dished part toward the barrel shoulder, and it fit better, and crushed just fine. |
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The "smaller" end that contacts metal is meant to touch the barrel. The wider mouth contacts the device being installed (e.g. suppressor, muzzle brake, etc) mark [email protected] |
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I asked Bushmaster to deliver the 24" NM Heavy-barrel ASSEMBLY with the A2 birdcage installed... well it arrived and I found the A2 birdcage plus this weird washer (looked concave/convex depending on how you look at it). My machining/engineering experience tells me that this is a crush washer. The tapered/sharp part of the washer would most likely "chew" into the metal as it was being crushed. I figured that it was cheaper and easier to replace the flash hider if it was excessively "chewed" out by the washer in a worst case scenario, rather than replace the barrel. So what I did was slip the washer with the flat side facing the barrel meat, and hand tighten the birdcage until it was flush. I then used the USGI barrel wrench and timed the flash hider so that the bottom did not have any slots (all facing up). I didn't bother with a torque wrench. Did I do this right? I know the crush washer orientation is being debated here, but did I do everything else right? |
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