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Posted: 12/9/2003 9:23:48 PM EDT
[#1]
If you're looking to save some money, take a look at the Olympic Arms FIRSH.. the BMAS and RRA quad both also require the removal of the front sight, and don't offer the uninterrupted rail that the FIRSH does. The BMAS does look nicer, though, IMHO
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Posted: 12/9/2003 9:36:46 PM EDT
[#2]
I sent Yankee Hill (the people who make Bushmaster and Rock River' railed float tubes) an e-mail about their "modular" float tubes with rails. In addition to my answer, this was included as well:
"We do have a new mid-length quad rail forearm coming in two configurations. One is our standard solid forearm as seen on our web page. The weight is 1.093 pounds or 17.5 oz.. The other is our new light weight series the weight on this item is only .78 pounds or 12.5 oz.. It is 1/3 of a pound lighter. All the weights include the barrel nut and the locking nut required to mount the forearms. Both will be available in 2 weeks." I would imagine that, if YHM is going to the trouble of making a "light weight" in mid-length, and since he referred to it as the "light weight series" that they'll be available in carbine and rifle too. |
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Posted: 12/10/2003 11:56:52 AM EDT
[#3]
I'm glad I clicked this one.. Just in time for Xmas huh? [:)]
I'll have to look into those too, thanks onslaught |
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Posted: 12/10/2003 12:03:07 PM EDT
[#4]
Is that DRISH system hard to install. Are there any special tools needed?
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Posted: 12/10/2003 2:47:26 PM EDT
[#5]
I guess what i'm asking is.... do these round style FF's (BMAS/RRA Quad) look right with the Knights ribbed rail covers on? The Knights RAS FF looks sort of oval when you look at it head on.
Some photos of these rails with Knights rail covers on would help me alot. I don't want to end up with a huge circumference with the covers on, at lest not larger then the Knights with the covers on. |
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Posted: 12/10/2003 4:31:13 PM EDT
[#6]
My experience is with a LiberatorII. Much the same as the other FF type handguards you are looking at. Due to the 4 rails being equal distance from the barrel bore line the handguard grip is wider than with my KAC M4. I used a KAC cover on the bottom and the ladder types on both sides. Even with this, the grip is still a bit wider than with the KAC.
[img]http://www.hunt101.com/img/078271.jpg[/img] |
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Posted: 12/10/2003 5:17:37 PM EDT
[#7]
Thanks TWW thats just what I needed to know.
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Posted: 12/10/2003 6:17:55 PM EDT
[#8]
My latest creation featuring a YHM rail system:
[img]http://www.sinistralrifleman.com/AIW-02-1.jpg[/img] It's not something you want to put together unless you have a full set of armorer's tools, but I do think it is one of the better buys for the $$$. |
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Posted: 12/11/2003 4:16:33 PM EDT
[#9]
Onslaught thanks for the plug.You are right in assuming that YHM is coming out with a new light weight series of forearms. We currently have the carbine in stock and ready to ship. It is approx. 1/4 pound lighter. It has not been entered onto the YHM web sight yet because we have just completed the first production run and photos are just now complete. The price is the same as our solid forearm on the web page. I will post a photo to this thread tomorrow when I get to work.If anyone is interested in purchasing it simply order the solid carbine 4 rail and in the memo section ask to have it replaced with the light weight version. Thanks again Onslaught.
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Posted: 12/11/2003 4:32:31 PM EDT
[#10]
when will the mid-length forearms be available and how much will they be, any pics? thanks
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Posted: 12/12/2003 5:47:45 AM EDT
[#11]
As promised here is a pic of the YHM carbine light weight forearm.
[img]http://www.yhm.net/images/YHM-9631.jpg[/img] Will have a pic and pricing on the mid-length by the end of next week. |
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Posted: 12/12/2003 12:03:18 PM EDT
[#12]
O_O!!!
OK, where can I buy one? |
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Posted: 12/12/2003 2:47:17 PM EDT
[#13]
please let me know when the mid lengths are available and would like pics and price thank you email [email protected]
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Posted: 12/26/2003 5:50:10 PM EDT
[#14]
Post is a little old, but here's what I have:
[img]http://www.hunt101.com/img/082366.JPG[/img] It's for sale on EE, not cheap though. Got alot into it. |
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Posted: 12/27/2003 7:28:54 AM EDT
[#15]
Below is a photo of [url=www.yhm.net]YHM's[/url] new mid-length forearms. They are priced at $128.00 each. They are not up on the web site yet but interested parties can call to order.
[img]www.yhm.net/images/MID-LENGTH2.jpg[/img] |
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Posted: 12/27/2003 9:35:11 AM EDT
[#16]
Archer_YHM, how high is the top rail of your new handguard, relative to the height of the flattop?
I had an early one that had a definite height difference and I'm wondering if this has been corrected on the current ones.. Thanks. |
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Posted: 12/27/2003 5:00:10 PM EDT
[#17]
YHM,that is a badass looking float tube!
Is it still rigid being that gutted? I think I might want to get one! |
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Posted: 12/27/2003 8:31:20 PM EDT
[#18]
It'll be perfectly rigid compared to what a human can do to it.. and certainly stronger than polymer... my only concern is whether the holes are big enough to get a finger through, which could be painful...
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Posted: 12/27/2003 10:22:58 PM EDT
[#19]
Damn, never thought of that, I bet you could burn your finger pretty easy with that tube.
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Posted: 12/28/2003 5:47:48 AM EDT
[#20]
Seems that KAC rail covers (and maybe some others as well) would cover a little bit of the space, but burn hazard would definitely be a concern if left exposed.
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Posted: 12/28/2003 7:11:11 AM EDT
[#21]
TREETOP all of our railed forearms are dimensioned and manufactured to be equal in height to the mil-spec flattop upper receiver. We also hold a very tight concentricity tolerance from rail to rail. There are however variations due to the tolerances of both parts which may cause a .020" difference in height. This can not be controlled to an absolute match to every upper receiver manufactured.
The design of the lightweight forearm was a response to the many requests from the field for a super light bare bones forearm. Our goal was to remove as much weight as possible from the forearm without jeopardizing the integrity and strength of the part. There is a chance that an operator could reach through the holes in the lightweight forearms and burn a finger. Safety is always a major concern when dealing with firearms and the problem was not taken lightly. We tried several different prototypes attempting to get around this problem but found the weight savings was not significant enough to warrant production. I believe that with proper handling the risk is minimal and the use of rail covers does reduce the risk. |
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Posted: 12/31/2003 5:46:20 AM EDT
[#22]
Archer_YHM:
Are the top and bottom rails on the lightweight handguard solid all the way across (as on the non-lightweight), or are they split down the middle (like the side rails in the pic of the LW handguard)? My concern is that devices with a center locking post (ie KAC or DPMS type vertical grip) won't work on a split rail. Thanks! |
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Posted: 12/31/2003 1:19:50 PM EDT
[#23]
Shooter521,
All four rails are milled down the center. |
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Posted: 12/31/2003 3:07:22 PM EDT
[#24]
Yankee Hill Machine website -[url]https://secure.valinet.com/~yankeeh/cgi-bin/web_store/web_store.cgi[/url]
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Posted: 1/8/2004 4:13:09 PM EDT
[#25]
Just bought one of the YHM light weight float tubes, thanks to the kind people of RB Precision. I installed two Knight's rail covers on it to see what the spacing would be to address the burnt finger concern. Gap measures under 1/2" and it is very difficult to get a finger into the rail. Knowing full well that many people leave the top rail uncovered, that is where a person could easily slip a finger in and get burnt by the gas tube or barrel because most of the top vent holes would still be uncovered.
[img]http://www.hunt101.com/img/087283.JPG[/img] The finish is good and the machine work seems to be pretty good as well. Does anyone know if there is a special wrench in existence for tightening the lock nut? The last two I built I used the screw driver/hammer/vice method. This did minimal, almost unnoticable, damage to the lock nut, but one slip and it could have been worse. I'd like to avoid that potential in the future. |
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Posted: 3/30/2004 10:53:24 AM EDT
[#26]
Does anyone have a number on how much these lightweight tubes weigh? They are VERY interesting to me.... thanks
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Posted: 3/30/2004 4:43:42 PM EDT
[#27]
Quoted: Does anyone have a number on how much these lightweight tubes weigh? They are VERY interesting to me.... thanks Found out for myself! (this is for the carbine) Email from YHM: The weight of YHM-9631 is 10.6 oz. That includes 3.1 oz. for the jam nut and barrel nut. Your current barrel nut and delta ring weighs 2.5oz. Thank you for your interest in YHM products. Paul xxxxxxx Plant Manager YHM |
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