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Posted: 7/30/2011 12:57:05 PM EDT
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I got a mid-length upper. The handguards move back about about 1/8 of an inch when I hold them in a firing grip. They also rotate a little with just a little pressure. I'm pretty sure I know the answer here, because neither of my rifles have handguards that move under normal pressure, but I'm gonna ask anyway. How much movement is tolerable? I'm guessing the answer is none. I suspect either the gas block is a little too far forward or the handguards are a little short. I just got it on Friday so the manufacturer isn't available to ask. |
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Normal for them to move, how much they move depends on how the handguards were made and how strong your weld spring is.
There will always be a little side to side movement on standard plastic handguard too. Can you try swapping guards from one rifle to another to see if its the handguard or the rifle? |
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The handguards are the standard round type. When they move back and forth, does the delta ring move with them? Or do they just slide around inside the delta ring? If the delta ring moves with them, it sounds like possibly a weak weld spring. Otherwise... as you said it could be any number of things, handguards too small, fsb too far forward, etc... ETA: If the rifle functions, and the handguards are not falling off it's fine to just shoot it if you want to. The movement won't hurt anything. |
| If you don't want to deal with replacing the weld spring right away there's a quick fix I've used with triangular handguards that seems like it ought to work with standard HGs. I got a sheet of gasket material at an auto parts store and cut a template to fit inside the handguard cap - it snugs 'em up quite a bit, although they likely won't be rock solid. |
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It's normal. The only way to fix it is to install a FF tube or rail system. i dont think so, he said the delta ring is easy to compress. in my experiences theyre a real pain in the ass It's still normal for their to be movement in two-piece handguards. |
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It's normal. The only way to fix it is to install a FF tube or rail system. i dont think so, he said the delta ring is easy to compress. in my experiences theyre a real pain in the ass It's still normal for their to be movement in two-piece handguards. I agree, movement is normal in plastic handguards... however being able to compress the delta ring with minimal effort is not normal on a new rifle in my (admittedly limited) experience. |
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Take it for what it is worth, but I have had like issues and it is usually from parts and/or uppers bought from 2nd tier parts houses like M1S, M&A and others like them. I believe most of the lateral play is from barrel nut splines and delta rings that are ever so slightly out of spec and allow the slop.
Hootbro |
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