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Posted: 10/28/2004 10:47:00 PM EDT
bushy car handguards... i guess 8 mags in a row was a few too many.
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Posted: 10/28/2004 10:48:06 PM EDT
[#1]
Is this a common thing with ar15's or did you just overshoot.
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Posted: 10/28/2004 10:51:27 PM EDT
[#2]
I did bump 8 mags in a row.. so what is that 240 rounds.. gas tube was glowing.
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Posted: 10/28/2004 10:52:56 PM EDT
[#3]
I find that if I shoot my ar's Underwater it helps in cooling the forearm
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Posted: 10/28/2004 10:53:43 PM EDT
[#4]
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Posted: 10/28/2004 10:55:37 PM EDT
[#5]
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Posted: 10/28/2004 11:02:06 PM EDT
[#6]
what is the matter w/ you?????????
now you have to get some quad rail handguards, so they wont melt 
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Posted: 10/28/2004 11:28:49 PM EDT
[#7]
Guns and water do not mix  
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Posted: 10/29/2004 12:20:41 AM EDT
[#8]
common with crappy injection molded handguards, buy some real ones. the plugs and posts give them away every time, they're not interchangeable.
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Posted: 10/29/2004 5:57:28 AM EDT
[#9]
Pardon my ignorance but what are the "real ones"? Thanks |
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Posted: 10/29/2004 6:30:46 AM EDT
[#10]
The real ones are compression molded.......you know, as in Colt? As Tweak would say, "Parts ain't parts." But of course everybody forgets about that while they're bashing Colt.
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Posted: 10/29/2004 6:31:33 AM EDT
[#11]
I believe he is refering to the handguards that have fiberglass in them, making them much more durable/resistant to heat. They're the ones that have the somewhat shiny appearance to them after a little use. That's what he means by "real", I'm pretty sure.
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Posted: 10/29/2004 6:31:44 AM EDT
[#12]
Very cool!! Light it up!!
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Posted: 10/29/2004 6:33:22 AM EDT
[#13]
Damn JStor beat me to the punch.
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Posted: 10/29/2004 6:47:52 AM EDT
[#14]
That is NOT what he is reffering to. JStor is correct the 'real ones' are compression molded, it obvious those busy ones were injection molded. Both processes can use fiberglass strands in the plastic (which are for strength) - bu the compression molding plastic results in a unit that will char instead of melt and can take higher tempertures. |
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Posted: 10/29/2004 6:52:56 AM EDT
[#15]
Cool, learn something new everyday.
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Posted: 10/29/2004 7:52:37 AM EDT
[#16]
so there are thermoset handguards? I was wondering. |
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Posted: 10/29/2004 8:14:37 AM EDT
[#17]
Real Colt Handguards (A2, CAR, and M4) are all compression molded. The military requires them to manufacture them this way....
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Posted: 10/29/2004 8:23:06 AM EDT
[#18]
Hmmm the picture of the .45 in the bucket is very similiar to the one on the UCI (Underwater Criminal Investigation) web site out of Carlisle, PA. That gun was recovered from a YORK, PA site.
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Posted: 10/29/2004 8:42:23 AM EDT
[#19]
AHHHHHH please send that 1911 to me for imediate restoration!!!!!!!!!! 
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Posted: 10/29/2004 8:45:17 AM EDT
[#20]
How about a short list of the makers of compression molded handguards (other than Colt). I'm in the market and it's hard to tell from the pretty pictures.
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Posted: 10/29/2004 11:12:11 AM EDT
[#21]
I believe its a material issue. We use heat stabilized nylon 6 for our handguards, it has a melting temperature of over 500 degrees. When we have fired guns to the point of the gas tube deforming without heatshields, the only areas of the handguards that were damaged were where the gas tube contacted them. |
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Posted: 10/29/2004 11:49:12 AM EDT
[#22]
SR you make good stuff for sure (that's why I use it my ARs) but Nylon 6 is different from the compression molded handguards.
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Posted: 10/29/2004 12:02:08 PM EDT
[#23]
There is no question... a huge difference in material composition of my Colt handguards and my Bushmaster guards..... now I know why. My Colt guards almost feel like a ceramic product, they are hard and they chip. But I can see how they can "take the heat".
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Posted: 10/29/2004 12:02:33 PM EDT
[#24]
I agree its not the same as compression molded handguards....I'm saying that all injection molding is not created equal, and the Bushy handguards were almost certainly a different material than what we use in injection molding, and thus have different thermal properties. I do not want people to believe that all injection molding is inferior, the material the parts are made from has a lot to do with how "good" they are. 
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Posted: 10/30/2004 12:28:24 AM EDT
[#25]
real gas tubes don't melt, I've tried. knockoffs do.
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Posted: 10/30/2004 1:19:10 AM EDT
[#26]
This argument again....thousands and thousands of rounds of abusive full-auto fire with the grand finale of several consecutive Beta mag dumps will destroy a gas tube, the barrel, and other parts as well. But that was not the point to my post....the point was when the gas tube did fail, the handguards were still intact, unscathed other than the burn marks from where the gas tube touched them without heat shields installed. |
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Posted: 10/30/2004 2:54:25 AM EDT
[#27]
Just to confuse the issue
, the 2003 Bushmaster catalog (p44) talks about their A2 handguards as compression molded of black composite polymer material to milspec.????????? |
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Posted: 10/30/2004 3:39:07 AM EDT
[#28]
This is why i changed my Bushy Patrolman's factory handguards over to Colt M4's as soon as it came home. |
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Posted: 10/30/2004 5:37:45 AM EDT
[#29]
The standard Bushy carbine handguards suck,The M4 ones I think are better than the double shielded colt ones..Cav Arms By far the best i have all the different types and theirs are the only ones I can shoot my rifle a long time with out gloves....Cav Arms furniture rules!!!
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Posted: 10/30/2004 5:58:01 AM EDT
[#30]
Brilliant. A true asset to the shooting community you are. |
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Posted: 10/30/2004 6:08:29 AM EDT
[#31]
Mark - I think you have gone off your meds again, man. Lighten up, Frances. |
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Posted: 10/30/2004 8:31:47 AM EDT
[#32]
SinistralRifleman,
I have always had outstanding results with the handguards I have purchased from CA. I'm not a slave to names/ brands like more than a few people here are, but I can say that I have carried your products on assorted duty rifles/ carbines without reservation. When it comes it handguards, I'm interested in function, and then fit. Cav Arms are top notch in both areas. It makes no difference to me if someone says their handguards are made out of diamond fairy dust, or monkey manure, what matters is how well they work. I don't spend much money with Cav Arms ( I haven't needed to), and they have no idea who I am, which is probably the best endorsement of all. YMMV, I simply call like I see it. |
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Posted: 10/30/2004 8:41:04 AM EDT
[#33]
So, im not supposed to have fun? I can do completely aimed bumping from my shoulder. It is not a waste, chicks dig it, and guys are impressed(not that i care about that) ITS JUST FRIKIIN FUN! Anywas what about all those people at nfa shoots that torture their guns? am i not allowed to torture mine? What is it here for.. to look at on a shelf? 300k bump from shoulder vid |
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Posted: 10/31/2004 4:00:08 PM EDT
[#34]
The older Bushy carbine HGs did suck. The newer ones are much stronger. Old version can be distinguished by the bare aluminum heat shields with vent holes that lined up with those in the handguards.  New version has the black aluminum heat shield with offset vent holes. Reinforced internally... just beefier in general.   
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Posted: 10/31/2004 4:16:54 PM EDT
[#35]
whoa that is totally different.
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Posted: 10/31/2004 11:54:14 PM EDT
[#36]
still injection molded crap
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Posted: 11/1/2004 1:21:58 AM EDT
[#37]
I have the Bushy A2 handguards that resemble the one on the left. If I used the one on the right, I wouldn't be able to attach a harris.
Anyhow, it feels very loose and rickety... I wish I had gotten something better but as long as my hand doesn't get burned the handguards are doing their job. I don't want to pay $$$ for an overpriced "tactical" gimmick. |
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Posted: 11/1/2004 2:15:52 AM EDT
[#38]
Get a:
ARMS SIR or KAC RAS or KAC PRAS II or SUREFIRE M73 They do not melt. 
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Posted: 11/1/2004 2:21:25 AM EDT
[#39]
That is the best photo I have seen of the detents that engage the teeth of the barrel nut. Good shot gregw45, I gotta learn how to use my camera. Are the handguard sets, identical or mirror image? |
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Posted: 11/1/2004 3:06:56 AM EDT
[#40]
BTW
Bushmaster shows Thermoset handguards for its A2 rifle length handguards... Are these the "good" ones or the "bad" ones? |
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Posted: 11/1/2004 3:10:38 AM EDT
[#41]
From Bushy's site:
Rifle Handguards Comp Molded
From Bushy's site regarding M4 handguards: Bushy M4 guards
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Posted: 11/1/2004 3:29:27 AM EDT
[#42]
+1 I think you hit the nail right on the head. |
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Posted: 11/1/2004 3:51:22 AM EDT
[#43]
Thermoset is a term for plastics that undergo a chemical change when heated and cannot easily be remelted and reformed. AFAIK they can be both injection and compression molded. |
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Posted: 11/1/2004 4:12:16 AM EDT
[#44]
The Bushy M4 handguards have the post/holes but I cannot find any pics of the Bushy CAR handguards. My Bushy A2 rifle full length handguards do not have the posts/holes.
Is there any other way to determine if its injection molded or compression molded? It's not like I will ever overheat my handguards (24" barrel, NM Hbar setup, single loads only). In fact I fired off several rounds and firmly gripped the barrel only to feel it cool off rather quickly. With my Vepr/RPK, the barrel burns up after about 4-5 rounds. |
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Posted: 11/1/2004 4:25:13 AM EDT
[#45]
I can tell by looking at the grain of the plastic, all the ones pictured here previously are bad ones.
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Posted: 11/1/2004 4:29:24 AM EDT
[#46]
That's not very helpful.
Are there any other ways of determining injection/compression molded handguards? |
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Posted: 11/1/2004 4:47:03 AM EDT
[#47]
Not sure if these will help with the discussion, but here goes:
  As was indicated above, I like the CavArms handguards best of all. I have no idea how their heat resistance properties compare with Colt, but the fit and finish is unmatched. |
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Posted: 11/1/2004 4:48:08 AM EDT
[#48]
metroplex,
sorry, best I can do, I thought you would be able to look at the pics and compare them to your handguards. In general, AFAIK and IME, the post and holes handguards are all crap. There may be some good ones out there but I haven't seen them. ETA, yep those do help CJan_NH, There presence of glue on the heatshields and the ridges and valleys instead of posts and holes are dead give aways for Colt handguards. So is the large amount of flash produced along the edges of the part. That may be a tell tale for the diff between injection and compression but we'd have to define "large amount". |
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Posted: 11/1/2004 4:58:45 AM EDT
[#49]
Have you seen rifle full length handguards with posts and holes?
I haven't seen any glue on my Bushy handguards, but it doesnt have posts/holes. it does use clips to hold down the heatshields. |
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Posted: 11/1/2004 5:19:51 AM EDT
[#50]
yep, I have several sets in my junk box.
Are the "clips" slots cut into the handguard into which the tabs of the heatshield are inserted? |
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