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Posted: 9/6/2013 5:19:20 PM EDT
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I was considering a DD omega mid length over a low profile gas block on a carbine 16" barrel. This made me wonder about the accuracy of front sights mounted on the handguard instead of a rail height FSB.
If the goal of free floating Is to relieve stress on a barrel, shouldn't the front sight stay on the barrel? That way the front sight would not shift independently from the barrel when putting stress on the handguard. Should I not expect a front sight on a free floated handguard to be accurate beyond minute of man? I do like iron sights over optics so I don't consider them to be backup only. I would have no problem keeping the FSB and just install a carbine length free float. Just going through a tacticool moment. |
| FWIW, I'm running LMT front and rear irons on my ar with a dd ris ii rail. This is also my only ar and iron sights only gun right now. The ris ii rail probably offers the strongest most secure lockup and interface to the upper receiver of any rail system on the market. With that being said, I have NO issues with accuracy whether I'm running drills on steel up close or laying prone and utilizing my sling for added support/tension or laying the front of the rifle on a pack to bang steel at about 250-300 yards(farthest shot I have available behind my house right now). |
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Quoted:
I was considering a DD omega mid length over a low profile gas block on a carbine 16" barrel. This made me wonder about the accuracy of front sights mounted on the handguard instead of a rail height FSB. If the goal of free floating Is to relieve stress on a barrel, shouldn't the front sight stay on the barrel? That way the front sight would not shift independently from the barrel when putting stress on the handguard. Should I not expect a front sight on a free floated handguard to be accurate beyond minute of man? I do like iron sights over optics so I don't consider them to be backup only. I would have no problem keeping the FSB and just install a carbine length free float. Just going through a tacticool moment. It's my understanding that it's goal is to relieve stress on the barrel as the bullet is traveling down the barrel, as to not interfere with the harmonics. I think it would also take a great deal of force on a quality hand guard that is properly installed to cause it to shift. if you want to keep your FSB, another option to carbine rail is the FSP cutout rails, ie RIS II FSP rail. |
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One of the advantages I see in using a long free floating handguard is the increase in sight radius. I'll have to do some experiments when I get a free float installed.
I know the DCM ppl say that sling tension on a service rifle affects POI and hence the free float tubes. Now if sling tension on a steel heavy barrel has an effect, I can only assume the aluminum handguard is stronger in some way to resist the same tension. |
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