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GHK AUG H-Bar LMG w/ GBBR hicap


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59 minutes ago, PureSilver said:

@CatgutViolin Could you go into a bit more detail about the bolt catch modification? Mine is doing the same sort of thing (not wanting to snap back down after being engaged) so I'd like to make the same fix, if yours works well!

Sure. So the problem is basically that the bolt catch is magnetic, rather than spring-loaded, which causes some pretty drastic falloff in strength. It's a lot harder to design a bolt catch that is weak enough for a mag to engage it when empty, but strong enough to return when the bolt is cycled. Basically it's a bad design, but we can work with it.

What I did was pretty simple- I extracted the bolt catch and dropped a 3x1mm N52 neodymium magnet into the bottom. If this causes the bolt catch to interact with the bolt when a mag is not inserted, remove the silicone buffer from the bolt catch. The extra magnetic force helps the bolt catch to reset the bolt, and allows it to function in any orientation.

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On 8/22/2021 at 3:54 AM, CatgutViolin said:

What I did was pretty simple- I extracted the bolt catch and dropped a 3x1mm N52 neodymium magnet into the bottom.

You're a hero, thank you! I've ordered 3x1, 3x1.5 and 3x2mm options to see what fits best.

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