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Posted: 8/18/2003 7:50:03 AM EDT
I've got a Bushy with a aluminum handguarsd that gets very hot on 90 degree days after a few full mags. Almost uncomfortable. Anybody had this problem? What can I replace it with? Carbon fiber? New furniture?
Link Posted: 8/18/2003 8:14:07 AM EDT
carbonfiber is both cool and kool but the cheapest and easyist method is to wrap it with paracord or buy a large square of AGRIP from brookstactical.com and wrapit or pacmayer makes a cool hardrubber sleeve to slide over it and i don't think it will melt. I think it only comes i rifle length so you would have to cut it down. http://www.pachmayr.com/pachmayr/index.htm
Link Posted: 8/18/2003 9:10:00 AM EDT
The paracord idea sounds good. I've seen a few here on the board.
Link Posted: 8/18/2003 9:12:44 AM EDT
I have a vented handguard for sale on the [url=http://www.ar15.com/forums/topic.html?b=7&f=22&t=177483&w=activePop]EE[/url]
Link Posted: 8/18/2003 9:14:27 AM EDT
thanks
Link Posted: 8/18/2003 10:00:26 AM EDT
Also, a small (2") section of picatinny rail with a PLASTIC vertical grip works pretty good. [img]http://www.z06vette.com/gallery/data/500/135kkm961.jpg[/img] AZ summer: 112º at the range + 30 round mad dumps + suppressor = H-O-T! -TF
Link Posted: 8/18/2003 10:39:40 AM EDT
Yup, people always thought my para cord wrapping was a cosmetic thing when they first saw it. At first glance it's easy to make that assumption but with our typical summer's day hitting 100+ it doesn't take much for them to imagine how hot the black handguard must get. Plus the way I did my wrapping I actually gain some additional function from the 1/2 twists in way of grip as well as maintaining a proper grip. It's also good for during winter when that same metal handguard gets COLD! [img]http://home.bak.rr.com/varmintcong/jpar/paracord.jpg[/img]
Link Posted: 8/18/2003 11:29:05 AM EDT
I would opt for the carbon fiber. They are expensive, but they look cool, and they are cool. As you may know they even make motorcycle mufflers out of them. I can touch my managers pipe, pun intended, after he has been out riding, and it is only warm.
Link Posted: 8/18/2003 11:40:42 AM EDT
I also have a BM with Aluminum Handguards and they heat up very (too) quickly. I now use Armalite fiberglass free floating tubes which I prefer.
Link Posted: 8/18/2003 12:12:01 PM EDT
Hi ScottG I shot a 3 gun match this weekend and shot a 4 string of 32 round standards and a 40 round field course imetiatly after under a sunny 88 degree day. I know that doesn't seem like a lot of shooting, but 72 rounds in rapid concession in a rifle make for a hot chamber. I have the vented hand guard as mentioned by StingerJG. I also have a JP Enterprises (http://www.jprifles.com) aluminum heat sink (that's why you see red through the vents on my hand guard) I couldn't feel any heat coming from my barrel. And didn't see any mirage through my scope. [img]http://image.uploader.net/uploaded/CA17V308.jpg [/img]
Link Posted: 8/18/2003 12:36:11 PM EDT
which is lighter, fiberglass or carbon fiber? Anybody got links to standard carbine lengths of either?
Link Posted: 8/18/2003 1:02:33 PM EDT
Carbon fiber hand guards are lighter then fiber glass only cause the fiber glass handguards have to be made thicker to be as strong as carbon fiber (well, fiber glass will never be as strong as carbon fiber)
Link Posted: 8/18/2003 4:19:33 PM EDT
Tigerfish What type of rear sights do you have. I can't tell by the pic, Is it a Mark Brown Custom flat top mount with the OKO(I believe?) mounted on top, or a stand alone rear sight with the dot mounted in front? Nice set up, it's alot like the way I want to set up my LEO only Bushy real soon.
Link Posted: 8/18/2003 5:15:08 PM EDT
I have the BM aluminum tube, the HyPerform Carbon Fiber Tube, a Knights RAS II tube, a PRI Carbon Fiber tube and a ARMS SIR Free Float system. ARMS SIR is the best system to increase airflow and dissipate barrel heat. The lower section is synthetic so it just does not get hot... period. Tigerfish's optic system is a C-More tactical sight. The rear sight is an integral part of the optic. Do some reading up on them before you decide whether or not thats the optic you really want.
Link Posted: 8/18/2003 6:43:47 PM EDT
Originally Posted By new-arguy: I have the BM aluminum tube, the HyPerform Carbon Fiber Tube, a Knights RAS II tube, a PRI Carbon Fiber tube and a ARMS SIR Free Float system. ARMS SIR is the best system to increase airflow and dissipate barrel heat. The lower section is synthetic so it just does not get hot... period. Tigerfish's optic system is a C-More tactical sight. The rear sight is an integral part of the optic. Do some reading up on them before you decide whether or not thats the optic you really want.
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What do you think of the Carbon Fiber? It's the lightest of the bunch right? you say the SIR dissipates the heat the best, but the carbon fiber can't get hot, can it?
Link Posted: 8/18/2003 9:19:16 PM EDT
Thanks [B]mcsd2598[/B], I have a Colt/C-More flat-top tactical sight on my Kitty-Kat® upper. It is my favorite M16 set-up. -T. Fish
Link Posted: 8/18/2003 9:31:34 PM EDT
I have not put the carbon fiber system through the torture I have put the SIR through. The SIR has been through no less than 3 full auto tests. Two of these tests we ripped 5 mags (150 rounds) through the system one right after the other. The top of the system was very hot and another aluminum tube we did the same thing to (the FIRSH) was far too hot to handle. The SIR was warm but not uncomfortable to hold. The HiPerfom Carbon Fiber tube has no vents, only the air holes in the nut and the open end. It will get warm, but because there is no vents it will retain most of the heat inside the handgaurds and over heat your barrel much quicker. Parts exposed to extreme temps like that will wear quicker than parts that arent. The Carbon Fiber tube is nice and I like it on the gun I have. There is nothing lighter than it to my knowledge. But I will take one SIR before I take 10 of almost anything else.
Link Posted: 8/19/2003 11:16:33 AM EDT
Because it doesn't conduct heat very well, the carbon fiber tube will not get that warm. This also means, however, that it will insulate the part of your barrel it covers and allowing it to get hot, which probably isn't good for it, like new-arguy said. I've never seen or used one myself, and am not that sure about the weight, but you may want to check out jp precision's free float tubes, they don't seem to be that heavy (does anyone here have experience with them?)[url]http://www.jprifles.com/FreeFloatTubeSystem.shtml[/url] PRI also makes a carbon fiber float tube, I don't know much about this one either .. [url]http://www.mdenterprise.com/pri.htm[/url] major_98 had a thread about this not too long ago and listed some good carbon fiber handguards.
Link Posted: 8/19/2003 11:24:37 AM EDT
[Last Edit: 8/19/2003 11:34:32 AM EDT by norman74]
Originally Posted By Chinaski: Because it doesn't conduct heat very well, the carbon fiber tube will not get that warm. This also means, however, that it will insulate the part of your barrel it covers and allowing it to get hot, which probably isn't good for it, like new-arguy said. I've never seen or used one myself, and am not that sure about the weight, but you may want to check out jp precision's free float tubes, they don't seem to be that heavy (does anyone here have experience with them?)[url]http://www.jprifles.com/FreeFloatTubeSystem.shtml[/url]
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link came back dead.
PRI also makes a carbon fiber float tube, I don't know much about this one either .. [url]http://www.mdenterprise.com/pri.htm[/url] major_98 had a thread about this not too long ago and listed some good carbon fiber handguards.
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Wow, that one looks like exactly what I want (minus the accessory rails) unfortunately it's $312 for the carbine version! Edit to add: That isn't just carbon fiber either, it's stainless steel lined, so I doubt it really saves on the weight. Looks like I should just get a regualr carbon fiber ff tube & drill vent holes in the top of it. Anybody got a link for a 100% carbon fiber carbine tube?
Link Posted: 8/20/2003 4:03:18 AM EDT
This may help [url]http://www.impactguns.com/store/product634.html[/url] [url]http://www.clarkcustomguns.com/cfrifleparts.htm[/url]
Link Posted: 8/20/2003 4:39:36 AM EDT
[Last Edit: 8/20/2003 4:39:59 AM EDT by stingerjg]
the carbon fiber would be the way to go. here are some pics of a rifle i built. [img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=12033[/img] [img]http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=12036[/img]
Link Posted: 8/20/2003 5:11:03 AM EDT
Originally Posted By ScottG: This may help [url]http://www.impactguns.com/store/product634.html[/url] [url]http://www.clarkcustomguns.com/cfrifleparts.htm[/url]
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Those are both great, but they're not carbine length. It sounds like this Hiperform (hyperform?) company is the only one with a carbine length carbon fiber free float tube.
Link Posted: 8/20/2003 5:27:37 PM EDT
[url]http://www.hiperform.com/new_page_1.htm[/url]
Link Posted: 8/20/2003 7:29:40 PM EDT
Originally Posted By Chinaski: but you may want to check out jp precision's free float tubes, they don't seem to be that heavy (does anyone here have experience with them?)[url]http://www.jprifles.com/FreeFloatTubeSystem.shtml[/url]
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Picture I posted in my reply above is of a JP Enterprises Grade 1 upper using the JP freefloat tube. It's pretty thick aluminum, I doubt it's any lighter than some of the other aluminum tubes out there like the Bushmaster vmatch tubes. Even with the vents of the JP Enterprises handguard I found it getting uncomfortably hot during the summer, just sitting in the sun soaking up heat like a sponge could be bad enough but it also still conducted heat. The slots in the tube did make for a real nice perfect line for aligning the 1/2 twists I made in the paracord which were intentional for making a bit more ergonomic grip, the twists line up very nicely with the joints of the fingers. Plus it's insulating properties are great allowing comfortable use in summer or winter.
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