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Posted: 2/17/2006 6:13:15 PM EDT
Hey, I was wondering if the RAS handguards used on the M4 carbines in Iraq are free-float or not.

Thanks for your input.
Link Posted: 2/17/2006 6:16:45 PM EDT
they are not free float.
Link Posted: 2/17/2006 6:20:13 PM EDT

Originally Posted By chris157c:
they are not free float.



Indeed. They are pretty nice though.
Link Posted: 2/18/2006 6:21:07 AM EDT
Nope. But yes, they are very nice.
Link Posted: 2/18/2006 8:43:54 AM EDT
[Last Edit: 2/18/2006 8:44:57 AM EDT by FROST18E]
oops, double post
Link Posted: 2/18/2006 8:44:29 AM EDT
As stated above not free float. As i remember it from when I was at 1st Group they went from the regular profile M4 barrel to the "socom" (the cool new catch phrase) heavy barrel for two reasons.
1) as Operators would pull the forward grip back towards them for stability it would put just enough stress and bend in the barrel to cause some of the bolt lugs to shear off, this was because the RAS was not a free float system.
2) at sustained rates of automatic fire the thin profile under the handguards would fail and rupture the barrel once it heated up.
Link Posted: 2/18/2006 11:20:22 AM EDT
torquing on a vfg can cas bolt lugs to shear? WTF over? Anyone have first hand experience b/c I'm not using free float and I hope this never becomes an issue...
Link Posted: 2/18/2006 12:03:42 PM EDT

torquing on a vfg can cas bolt lugs to shear? WTF over? Anyone have first hand experience b/c I'm not using free float and I hope this never becomes an issue...




Relax.... he talking real deal guys with mega high round counts doing mega mag dumps on high round count weapons. And these guys got arms like Popeye......

This is not a widespread problem if at all....
Link Posted: 2/18/2006 5:20:43 PM EDT

Originally Posted By Harv24:
Relax.... he talking real deal guys with mega high round counts doing mega mag dumps on high round count weapons. And these guys got arms like Popeye......

This is not a widespread problem if at all....



TRANSLATION

Relax, he's talking about SF soldiers that shoot a lot of rounds through fully automatic weapons...

This is not a widespread problem if at all...

Link Posted: 2/18/2006 5:22:18 PM EDT
[Last Edit: 2/18/2006 5:22:54 PM EDT by Lumpy196]

Originally Posted By Black-Tiger:
Nope. But yes, they are very nice.




WOW, you've actually seen and touched a REAL KAC RAS???
Link Posted: 2/18/2006 7:38:41 PM EDT

Originally Posted By Black-Tiger:

Originally Posted By Harv24:
Relax.... he talking real deal guys with mega high round counts doing mega mag dumps on high round count weapons. And these guys got arms like Popeye......

This is not a widespread problem if at all....



TRANSLATION

Relax, he's talking about SF soldiers that shoot a lot of rounds through fully automatic weapons...

This is not a widespread problem if at all...




I find it hard to believe that somone could put enough pressure on the barrel by pulling back on a VFG to bend not only the barrel, but the upper as well. Since the upper would have to give inorder for the barrel to pivot that much at the extension when the barrel nut it properly torqued.
Link Posted: 2/18/2006 7:58:41 PM EDT
[Last Edit: 2/18/2006 8:03:07 PM EDT by safetyhit]
First I've ever heard of this. Seems a bit far fetched, even at sustained full-auto.

I should add that I have never run through more than three 30 round mags at F/A, so maybe I don't know.
Link Posted: 2/18/2006 8:17:46 PM EDT
Didn't say it happened in every gun, but it did happen. Bolts got sheared and barrels got ruptured. And as stated above we shot a bit more than you guys do, several thousand rounds a week. Hell, one rehearsal of a break out from encirclement drill will run you through about 300-400 rounds in about 5 minutes or less.
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