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November 23rd, 2009, 19:23 | #1 | |
King Arms body+wobbly Font end? Possible strange threading?
Well, I have been working on and off on a scratch built AR for a while now, however, I am having serious issues getting my rail system to work right. It is a Huang DD MK18 rail system, on a King Arms stag-arms metal body.
No matter how much i tighten the delta ring, the RAS doesn't seem as solid as it should be, neither does the outer barrel. I noticed this image on the KA website. See where it says "Perfect fit with M4 RIS"? Does this mean I can't use airsoft front ends? Will the G&P versions work? I know they use different threading too. Thanks a lot, Ben
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Last edited by theguy; November 23rd, 2009 at 19:26.. |
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November 23rd, 2009, 19:33 | #2 |
Red Wine & Adderall
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Not the answer you were looking for but mid-low quality front end plus good quality body maybe the issue. The "Perfect fit with M4 RIS" probly means with their own made RIS.
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November 23rd, 2009, 19:34 | #3 | |
okay, thanks.
So just pick up a higher end front end? Any brand in particular? I guess King Arms would be an obvious first choice
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November 23rd, 2009, 19:35 | #4 |
If you want to ensure the best fit.. Definitely get King Arms. Matching brands is always a good idea, even with externals. They make their own products mesh perfectly together.
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November 23rd, 2009, 19:37 | #5 |
Red Wine & Adderall
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Well before you go and invest more money lets examine your situation some more.
When you initially stated that it did not feel as "solid" as it should be can you perhaps expand on that? Do things wobble? Do things flex ( oh god please don't tell me things are bending randomly) Does the rail not line up with the receiver? Please clarify your situation,
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"Its only a little bit on fire" |
November 23rd, 2009, 19:38 | #6 |
I think you should buy a gas block while your at it. Maybe even a gas tube.
hint hint |
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November 23rd, 2009, 19:38 | #7 |
E-01
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Well, first off.. did you try adjusting the spacers?
You should have gotten a set of small metal discs with your front end, which are used as spacers between the barrel and receiver. This allows you to space the front end properly (most people just throw on their RAS, but properly done the rail intervals should be continuously spaced between the receiver and front end).
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November 23rd, 2009, 19:44 | #8 |
Red Wine & Adderall
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Drake makes an excellent point that I should have brought up initially. I apologies Im kind of off today. Check those spacers. There should be absolutely no play for the outer barrel to move forward and should not wobble from side to side. You may have to play around a bit before you may find something kosher.
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"Its only a little bit on fire" |
November 23rd, 2009, 19:47 | #9 | ||||
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This is especially worrying as the movement in my outer is causing my hop-up unit to move slightly, giving me feeding issues, and airseal issues Quote:
Forgive my ignorance, this is my first AR platform, does the faux gas block/gas tube actually add any stability? Quote:
Nope, these were not included in the package.
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November 23rd, 2009, 19:56 | #10 |
Red Wine & Adderall
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You may need some of those, your RAS/RIS should have come with them, although I'm not surprised that you didn't receive any of them. These spacers should help out a fair amount.
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"Its only a little bit on fire" |
November 23rd, 2009, 20:22 | #11 | |
E-01
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Quote:
I really think you need those spacers/shims in space. I've never been able to tighten down a barrel nut enough (even with a real steel armorer's wrench) to get a solid fit without those spacers installed (I'd describe the feeling as "the nut is as tight as it'll go, but the barrel is still loose").
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November 23rd, 2009, 20:26 | #12 | ||
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Any idea where i could acquire some? My rail system didn't include any.
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November 23rd, 2009, 20:53 | #13 |
yup, Drake's got that one right, you are lacking the shims that goes in between the Delta Ring and the outer barrel.
I have a few extra but I may need them. So I measured it for you, see if you can find any online or in any hardware store 3cm diameter. The ring is 2mm wide. These shims I got with the King Arms Troy MRF rails. |
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November 23rd, 2009, 20:55 | #14 | ||
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Thanks so much, thats perfect. How exactly do I install them? Is it like gearbox shimming? Add one at a time until it works? or just throw 4 or 5 on there?
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Quote:
Chinese proverb
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November 23rd, 2009, 20:59 | #15 |
I believe I may have some shims from a front end kit I got a while ago, pm me if your interested
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