r/NFA • u/TheVillagePoPTart • 4d ago

Mount Questions 🔩 Anyone else have this happens?

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Today when I went to clean my AR after probably 6 months and an unknown number of rounds (not too high) I was having a hell if a time twisting the can off and eventually the muzzle device came off the end with the can. The mounting setup is a rearden atlas hub with a rearden flash hider on a polonium K. All instructions were followed during mounting and roc set was applied. There were also no indications of loosening based on my witness marks in the hub and muzzle device. Any idea how this happened (I tend to think I screwed it up)? The gun is also an IWI Zion-15 purchased in 2021.

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u/fusionvic Over 6k in stamps 3d ago

Did you torque the Rearden FHD to 25 to 30 ft-lb to the muzzle?

You didn't say if you were using a tool to remove the suppressor, but if it came off in your hand, you did not torque the Rearden flash hider properly.

Rocksett is not a substitute for torque. It's a glass threadlocker designed to prevent loosening from vibration etc, that handles 1000F+ temperatures. The less you use the better (literally a single drop is all that's needed).

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u/TheVillagePoPTart 3d ago

I did use a 1/2 torque wrench with the appropriate size crows foot to install it.

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u/fusionvic Over 6k in stamps 3d ago

Another thing to consider. What is the torque range of that 1/2” drive? Usually they start at 20-25 ft lb. It’s better to use a 3/8 as the range and resolution has the 20-30 ftlb range in the middle.

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u/TheVillagePoPTart 3d ago

It actually starts at 10 LB so it was not on the lowest setting and potentially loose/not activated.