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Posted: 6/6/2017 12:37:07 PM EDT
[#1]
If one wishes to attach a shooting sling, as opposed to a simple carry sling, then the worst place to attach it is to the barrel or anything directly attached to the barrel, such as the traditional FSB/Bayo lug point.
It's easy to deflect AR barrels up to and including the 20" HBAR barrel with a tight shooting sling. Deflecting the barrel with a shooting sling--or anything else, for that matter--will have definite and measurable adverse effects on the POI. People using shooting slings attach the forward mounting point at a place where the sling not deflect the barrel. On the AR, that almost always means either a free-float handguard, or for Match shooters, a free-float tube concealed within the OEM handguards. As long as the particular, chosen handguard meets one's needs, I see everything to gain from a free-float HG, and nothing to be gained by using non- free-floating HGs. Before final purchase of what is advertised as a free-float HG, do some homework. Some seem to be much more rigid than others. Taking a tight sling on a very flexible Free-float HG could cause it to touch the barrel. Of course, this also depends on the barrel OD, and the ID of the FF HG. |
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Posted: 6/8/2017 4:27:50 AM EDT
[#2]
My go-to AR has a pinned FSB and drop-in hand guard, and I wouldn't have it any other way.
For a SHTF type of setup, there would be no advantage to a FF rail really. With standard iron sights or low magnification prism, fast shots to 300 yards are easy and accurate. A scoped rifle with higher magnification would benefit from a FF setup for sure, I have one for longer range shots from a bipod and the rail is great for that...though I can also pop the bipod onto my Magpul hand guard and hit longer shots with my M4 type carbine too. It just depends on what you prefer, but I would always grab my trusty 14.5" / FSB setup first. |
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Posted: 6/8/2017 8:01:23 AM EDT
[#3]
Quote HistoryQuoted:
My go-to AR has a pinned FSB and drop-in hand guard, and I wouldn't have it any other way. For a SHTF type of setup, there would be no advantage to a FF rail really. With standard iron sights or low magnification prism, fast shots to 300 yards are easy and accurate. A scoped rifle with higher magnification would benefit from a FF setup for sure, I have one for longer range shots from a bipod and the rail is great for that...though I can also pop the bipod onto my Magpul hand guard and hit longer shots with my M4 type carbine too. It just depends on what you prefer, but I would always grab my trusty 14.5" / FSB setup first. |
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Posted: 6/15/2017 1:41:55 AM EDT
[#4]
Quoted:
Howdy, new to AR's and besides them looking kinda cool and generally having multiple attachment points what is so cool about free floating hand guards? Now I may be wrong but I think the only attached between upper and barrel and do not touch anywhere else... right? Seems like a lot of hassle to install especially for newbies like me. I have opted for a DD Omega 7 that does not require modifications to the AR. SHould be plenty good for me but has me curious as to advantages the free float must have as most customs utilize this. Thanks, Whatrix I opted for a BCM KMR. It didn't require modifications to the gun either. It bolts right on with an untimed barrel nut. I don't want a heavier, fatter, shorter rail that requires the use of a timed barrel nut. Why would I limit myself to less space, more weight, and a crappier hold on my forend? Why would I want to use a timed barrel nut? The Omega was a great idea for a fixed FSB gun upgrade 10 years ago. |
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Posted: 6/15/2017 1:49:59 AM EDT
[#5]
Quote HistoryQuoted:
Can you support with objective, peer-reviewed published data that the image brightness, resolution or contrast of an object viewed in a focal plane of say, 100 yards away is measurably degraded by a FSB several inches ahead of the objective lens and in a completely different focal plane? So it's like a daylight filter on a PVS14 that allows a perfect image to pass in a different focal plane BUT HAS NO EFFECT on brightness in your world? A FSB may have a small limitation in light transmission, but it most certainly exists... THERE IS A NON TRANSPARENT OBJECT IN FRONT OF THE OBJECTIVE! Does that somehow escape your comprehension? I can't agree it alters image quality for a certainty... and figure it probably does not, but light transmission reduction is not even remotely debateable. |
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Posted: 6/15/2017 1:53:01 AM EDT
[#6]
Quoted:
Howdy, new to AR's and besides them looking kinda cool and generally having multiple attachment points what is so cool about free floating hand guards? Seems like a lot of hassle to install especially for newbies like me. I have opted for a DD Omega 7 that does not require modifications to the AR. Whatrix You mean the hassle of turning a wrench a quarter turn? Or is it the use of an Allen key to tighten up two bolts that is the "hassle" part? I don't get it. |
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Posted: 6/15/2017 8:35:38 PM EDT
[#7]
if you're concerned about the cost-benefit(s) of a free-floating barrel, look further into it
you said you're new to this. learn more and shoot more, you'll find what works for you |
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Posted: 7/2/2017 8:14:09 AM EDT
[#8]
I changed my uncles AR forend from FSB/Two Piece to a Free Float/GB setup. His groupings shrunk considerably.
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Posted: 7/2/2017 8:22:31 AM EDT
[#9]
A better question is why wouldn't you use free float hand guards? They provide more modularity, in many cases are just as or lighter than a comparable non-FF setup. They can provide more real estate for your hand, especially on shorter barreled rifles.
The only real down-side is that they cost a tad (and I mean just a tad) more $ than standard hand guards.......but the benefits vastly out weigh the costs. And barrel harmonics is a thing. Precision is the ability to repeat results with the same outcome. The more consistently a barrel vibrates, the more precise it will be capable of being. I have one AR that isn't free floated and it's my beater truck gun. It will get a better setup when I get around to it. Which isn't likely to happen, and it's accurate enough for that use. |
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Posted: 7/3/2017 11:08:04 AM EDT
[#10]
Quote HistoryQuoted:
Please tell me you are not this stupid... So it's like a daylight filter on a PVS14 that allows a perfect image to pass in a different focal plane BUT HAS NO EFFECT on brightness in your world? A FSB may have a small limitation in light transmission, but it most certainly exists... THERE IS A NON TRANSPARENT OBJECT IN FRONT OF THE OBJECTIVE! Does that somehow escape your comprehension? I can't agree it alters image quality for a certainty... and figure it probably does not, but light transmission reduction is not even remotely debateable. Quote HistoryQuoted:
Quoted:
Can you support with objective, peer-reviewed published data that the image brightness, resolution or contrast of an object viewed in a focal plane of say, 100 yards away is measurably degraded by a FSB several inches ahead of the objective lens and in a completely different focal plane? So it's like a daylight filter on a PVS14 that allows a perfect image to pass in a different focal plane BUT HAS NO EFFECT on brightness in your world? A FSB may have a small limitation in light transmission, but it most certainly exists... THERE IS A NON TRANSPARENT OBJECT IN FRONT OF THE OBJECTIVE! Does that somehow escape your comprehension? I can't agree it alters image quality for a certainty... and figure it probably does not, but light transmission reduction is not even remotely debateable. |
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Posted: 7/7/2017 7:26:57 PM EDT
[#11]
Depends on the purpose of the AR.
This is especially evident on a rifle with a longer barrel and a non-FF rail. If you're a noob, a drop in handguard/rail will likely suit you just fine. |
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