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7/24/2007 7:27:32 AM EDT
looking around at many of the rifles for sale I see that many of the main manufacturers (CMMG, Stag, RRA) offer most of their rifles (in my price range) with the standard fore end.

Question

how much of an increase in accuracy can one expect from a free floated fore end as opposed to the standard fore end? Is it worth the extra money?
7/24/2007 7:34:53 AM EDT
[#1]
Depending upon the "brand" of rifle, (I have tested Colt, RRA, CMMG and BCM) you are looking at around 1/16" to 1/4" at 100 yards.

YMMV, but the FF rails aspect really pays more benefit to those using lights and VFGs and other rail mounted items and not having those accessory items and sling tension affect your POI.

mike
7/24/2007 10:26:32 AM EDT
[#2]

Quoted:
Depending upon the "brand" of rifle, (I have tested Colt, RRA, CMMG and BCM) you are looking at around 1/16" to 1/4" at 100 yards.

YMMV, but the FF rails aspect really pays more benefit to those using lights and VFGs and other rail mounted items and not having those accessory items and sling tension affect your POI.

mike

While Mike is generally correct, it does make a difference if you are comparing a lightweight std handguard barrel with a floated lightweight barrel as opposed to say an HBAR std handguard with a floated HBAR barrel. The heavier weight barrel should resist movement from the std handguard pressure due to it’s inherently higher stiffness vs the stiffness of a lightweight barrel so floating a light weight barrel should give you the most difference compared to the std handguard.  In addition, an HBAR middy should theoretically have better accuracy than a HBAR carbine as more of the barrel is the large diameter.  That's why full bull barrels (in essence an HBAR from chamber to muzzle) are considered the most accurate.
7/24/2007 8:50:15 PM EDT
[#3]
I am considering an 18" upper by cmmg, 20" upper by Del-ton or RRA 20" upper.  Would putting a free float tube really increase the accuracy of these uppers?

I am trying to keep the cost down and only get the things that I really need to make the upper perform
7/25/2007 8:32:02 AM EDT
[#4]
FWIW, there is no rule that says you can't purchase and shoot an upper before deciding to FF the forend.

Perhaps your upper choices will meet your accuracy requirements without it, but only testing will tell.....

mike
7/25/2007 5:39:39 PM EDT
[#5]
Good idea.  

Just two more questions.  How hard is it for a newB to change forends (i know if you have to ask you probably shouldn't be doing it).  

Is a Standard front site base going to be in my way with a low power scope? (I want a folding BUIS but they are out of my price range right now) or would I be better off with a gas block with a 1913 rail?
7/26/2007 2:38:41 AM EDT
[#6]

Quoted:
Good idea.  

Just two more questions.  How hard is it for a newB to change forends (i know if you have to ask you probably shouldn't be doing it).
Atop the "Build it Yourself" forum you will find all the details on "how-to" w/ pics and the tools you'll need, but understand that you have FF rail choices nowdays that require no removal of the FSB or muzzle device)

Is a Standard front site base going to be in my way with a low power scope? (I want a folding BUIS but they are out of my price range right now) or would I be better off with a gas block with a 1913 rail?

I see it's shadow on my 4X ACOG mounted M4, but it certainly does not bother or prevent me from getting hits - higher powered scopes will never notice it. YMMV, but all my M4s have standard FSBs as I don't care for flip up fronts - only the ARMS or Troy BUIS rears


good luck and welcome aboard ,
mike
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