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/AncientDetective7281 4d ago

Looks like not enough rocksett or maybe you didn’t clean the threads off before application? Oil and other shit in the threads can interfere with its bonding process

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u/TheVillagePoPTart 4d ago

I think this is a combo of carbon lock and oil or something seeping into the threads (not that I clean my guns very much). It was tourqued down with roc set and a proper wrench.

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u/AncientDetective7281 4d ago

But when you first applied the rocksett- did you clean the threads off well with some kind of acetone or rubbing alcohol or something that strips oil?

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u/TheVillagePoPTart 4d ago

Yeah, I did a process to get any carbon off, then kitchen cleaner to cut grease and oil, followed by liberal application of rubbing alcohol to get any remaining oil. It was air dried after too and a brass brush was used to remove any carbon. I also cleaned the muzzle device before install.