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3/4/2007 9:45:21 AM EDT
.....that will fit inside the FF HG of an MGI upper. Looking for lowest weight highest reliability. Is steel better than aluminum for durability/reliability? (obviously heavier)
3/4/2007 9:49:50 AM EDT
[#1]
if you make your own from a FSB I think it would fit your prescribed needs for being light weigh.fitting under a FF HG and being extremely reliable (Pinned vs set screw...no contest..pinned wins)


All you need is a vise..a dremel and about a dozen cutting disks and about 2 hours of your time..

3/4/2007 9:57:35 AM EDT
[#2]

Quoted:
if you make your own from a FSB I think it would fit your prescribed needs for being light weigh.fitting under a FF HG and being extremely reliable (Pinned vs set screw...no contest..pinned wins)

img.photobucket.com/albums/v494/harv24/IMG_1344.jpg
All you need is a vise..a dremel and about a dozen cutting disks and about 2 hours of your time..



Nothing like launching brand new disk after brand new disk all because you torqued it 2 degrees the wrong way...
3/4/2007 5:09:59 PM EDT
[#3]
I wasn't looking to build one. I'm looking for experienced opinions/recommendations, based on my criteria, on the various units available for purchase.
3/4/2007 5:18:09 PM EDT
[#4]
PRI
Noveske
Vltor
LaRue

Pick one.
3/4/2007 5:20:15 PM EDT
[#5]
Most (all?) are steel, Vltors are reasonably light, the MI gas block is a lunker, it could anchor a small boat.

Those two are all I've tried.

3/4/2007 6:21:54 PM EDT
[#6]

Quoted:
PRI
Noveske
Vltor
LaRue

Pick one.


Of those 4, the first three are roughly the same weight (around 1.2oz) and the LaRue is at or just over 2oz (IIRC).  Of those 4, only the LaRue will cover the entire gas block area (if your barrel was drilled for a FSB)  All are steel, all are low profile, all are excellent choices.
3/5/2007 4:45:41 AM EDT
[#7]

Quoted:

Quoted:
PRI
Noveske
Vltor
LaRue

Pick one.


Of those 4, the first three are roughly the same weight (around 1.2oz) and the LaRue is at or just over 2oz (IIRC).  Of those 4, only the LaRue will cover the entire gas block area (if your barrel was drilled for a FSB)  All are steel, all are low profile, all are excellent choices.


Excellent info. What won't the others cover. If It's not under a handrail how will it look. What will I see?
3/5/2007 9:51:03 AM EDT
[#8]

Quoted:

Excellent info. What won't the others cover. If It's not under a handrail how will it look. What will I see?


When you remove the standard FSB, there will be 2 holes that are drilled thru the barrel where the taper pins went thru. The PRI, Noveske and Vltor gas blocks, once installed, will only cover up one of the taper pin holes. Some folks dont care for that, me included. Is it Ok to run it that way, sure it is. The Larue GB on the other hand, is made longer, so that it covers up both taper pin holes, this does look better.

They are all very well made by the best companies in the industry.

Just pick one that fits your criteria.
3/5/2007 12:24:16 PM EDT
[#9]

Quoted:

Quoted:

Excellent info. What won't the others cover. If It's not under a handrail how will it look. What will I see?


When you remove the standard FSB, there will be 2 holes that are drilled thru the barrel where the taper pins went thru. The PRI, Noveske and Vltor gas blocks, once installed, will only cover up one of the taper pin holes. Some folks dont care for that, me included. Is it Ok to run it that way, sure it is. The Larue GB on the other hand, is made longer, so that it covers up both taper pin holes, this does look better.

They are all very well made by the best companies in the industry.

Just pick one that fits your criteria.


Also, if your barrel is made by one of the many companies who parkerize AFTER FSB installation, you will have two bare metal spots that could rust.  (Unless your barrel is stainless)
3/5/2007 2:48:23 PM EDT
[#10]

Quoted:

Quoted:
PRI
Noveske
Vltor
LaRue

Pick one.


Of those 4, the first three are roughly the same weight (around 1.2oz) and the LaRue is at or just over 2oz (IIRC).  Of those 4, only the LaRue will cover the entire gas block area (if your barrel was drilled for a FSB)  All are steel, all are low profile, all are excellent choices.


IIRC, the LaRue Tactical gas block measures 3.9 ozs.
3/6/2007 3:44:26 PM EDT
[#11]
i have a YHM quad rail gas block on my dpms and it seems to be very good had no problems putting it on and it shoots just as good as the factory a1 sight post.  I would recommend lookin at there stuff
3/9/2007 6:32:26 PM EDT
[#12]

Quoted:
Of those 4, the first three are roughly the same weight (around 1.2oz) and the LaRue is at or just over 2oz (IIRC).  Of those 4, only the LaRue will cover the entire gas block area (if your barrel was drilled for a FSB)  All are steel, all are low profile, all are excellent choices.


LaRue 0.625" is 3.9oz
LaRue 0.750" is 2.8oz

I have been adding component weights to my parts page as I get around to weighing them...

IIRC, the LaRue Tactical gas block measures 3.9 ozs.
3/9/2007 6:36:44 PM EDT
[#13]

Quoted:
Most (all?) are steel, Vltors are reasonably light, the MI gas block is a lunker, it could anchor a small boat.

Those two are all I've tried.



MI 0.750" is 3.5oz, which is 0.4oz lighter than a LaRue 0.625" gas block, but also 0.7oz heavier than a LaRue 0.750" block.

Not enough to really worry about when you consider that the MI block also covers the pin cuts and lack of parkerizing for $25 les than the LaRue.
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