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best lightweight free-float rail for Sig-556?
12/13/2011 7:14:01 PM
Does anyone make a good lightweight free-float rail for the Sig-556? My Sig-556 Classic is already pretty heavy for a .223, so I do not want the common heavy aluminum 4-rail style. Ideal would be a rigid smooth low-profile float tube with holes for attaching small lengths of picatinny rail wherever I want. Such products exist for the AR-15, like the Samson Evolution rail, but I haven't found any yet for the Sig-556.
I want to use a Ching Sling or traditional loop shooting sling without worrying that barrel tension will change my point of impact. It'd also be nice to attach a small flashlight.
Although, hm, at least one experienced Sig-556 shooter is using the heavy non-free-float Troy BattleRail, and saw an accuracy improvement from the increased rigidity and/or changed barrel harmonics. That's not a crazy idea; some rifles with light barrels, like the older Mini-14s, are known to benefit from barrel-clamp devices like the Acccu-strut.
What is your experience firing your Sig-556 with sling tension and/or with the handguards rested against various objects? Do you see point of impact shifts?
Btw, the factory handguards on my Sig-556 Classic rattle around a bit, which doesn't seem right. Is there a good way to fix that?
I want to use a Ching Sling or traditional loop shooting sling without worrying that barrel tension will change my point of impact. It'd also be nice to attach a small flashlight.
Although, hm, at least one experienced Sig-556 shooter is using the heavy non-free-float Troy BattleRail, and saw an accuracy improvement from the increased rigidity and/or changed barrel harmonics. That's not a crazy idea; some rifles with light barrels, like the older Mini-14s, are known to benefit from barrel-clamp devices like the Acccu-strut.
What is your experience firing your Sig-556 with sling tension and/or with the handguards rested against various objects? Do you see point of impact shifts?
Btw, the factory handguards on my Sig-556 Classic rattle around a bit, which doesn't seem right. Is there a good way to fix that?
12/13/2011 8:30:39 PM
I have the battle rail and my accuracy was great even with crap ammo... Highly impressed.. It has a nice fit and finish, couldn't be happier.
12/13/2011 10:01:08 PM
I use the Samson STAR556 rail. It's a well made piece. It adds weight to the rifle but gives it such a solid feel you don't really notice it. It's all the crap people hang off the rails that make em' so heavy. You really can't go wrong with the TROY or the SAMSON rails
12/15/2011 2:32:20 PM
So what does the Samson STAR-SIG-556-3H rail weigh? From photos, it appears to clamp to the gas black and bayonet mount, and so does not free-float.
Troy says their rifle length Sig 556 BattleRail is 21.5 oz. They don't give the weight pistol/carbine length rail.
The KZ Sig 556 pistol-length rail is 16.3 oz, no information given on whether it free-floats or not.
Troy says their rifle length Sig 556 BattleRail is 21.5 oz. They don't give the weight pistol/carbine length rail.
The KZ Sig 556 pistol-length rail is 16.3 oz, no information given on whether it free-floats or not.
12/15/2011 3:29:37 PM
They cant free float.. the majority of the support is at the gas block, so it has to be attached there...
12/23/2011 7:48:25 PM
Originally Posted By FreezinSig:
They cant free float.. the majority of the support is at the gas block, so it has to be attached there...
They cant free float.. the majority of the support is at the gas block, so it has to be attached there...
And you know this how? What makes you so sure?
12/23/2011 8:53:49 PM
FreezinSig is sure because they don't attach at the barrel nut like an AR15 does. The good one piece units like your looking at will replace the top rail on the receiver to form a monolithic top rail but it has to lock into the bayonette lug and front take down pin to be solid. Here is a pic of mine:
