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Posted: 2/15/2016 4:15:28 PM EDT
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does anyone have experience with this rail? It looks like it fastens to the barrel nut similar to the KAC M4 rails.
http://damageindustriesllc.com/product/1913-rail-handguard-m4-carbine |
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Quoted:
Those two sentences are not mutually exclusive.  Quoted:
Quoted: They are not free float. They are drop in. Those two sentences are not mutually exclusive. How would that work? Free float rails use a barrel nut with a rail attached to that, single point of attachment is the front threaded portion of the upper receiver. A drop in uses the delta ring and a handguard cap, with 2 points of attachment, with the point being that force and barrel deflection can be transferred to the barrel through the handguard. Thanks for clarifying your viewpoint. |
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Quoted:
How would that work? Free float rails use a barrel nut with a rail attached to that, single point of attachment is the front threaded portion of the upper receiver. A drop in uses the delta ring and a handguard cap, with 2 points of attachment, with the point being that force and barrel deflection can be transferred to the barrel through the handguard. Thanks for clarifying your viewpoint. Quoted:
Quoted:
Quoted: They are not free float. They are drop in. Those two sentences are not mutually exclusive. How would that work? Free float rails use a barrel nut with a rail attached to that, single point of attachment is the front threaded portion of the upper receiver. A drop in uses the delta ring and a handguard cap, with 2 points of attachment, with the point being that force and barrel deflection can be transferred to the barrel through the handguard. Thanks for clarifying your viewpoint. Daniel Defense's Omega rail clamps to the standard bbl nut: http://danieldefense.com/rail-systems/omega-rail/omega-rail-7-0-carbine.html 
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I got my Damage Industries Drop-In Carbine rail last night and I'm really pleased with it.
This is my first RAS for an AR and I was worried that the edges would be pointed, but everything is rounded or broken to a chamfer; I dragged it across my skin with no discomfort. I was also expecting them to be wider than they are even though the product description says "ultra thin". They are a little over 2" wide (I can re-measure when I can get to my calipers) which seems to be on-par with some free float options. The finish seems pretty heavy and is a very dark, semi-gloss black and the T-marks not highlighted with a different color. The T-marks also do not have a left or right indicator like some other rails I have seen, but based on the design of the rail I don't see that it would have been necessary; as long as the front part is forward it doesn't seem to matter which half is the top/bottom/left/right. The only "downside" I can mention is that they didn't "drop-in" as easily as I assumed they would. I was expecting the ease of removing/installing a standard handguard but it took considerably more effort. I think this was due to the tightness of my handguard cap, but it did take a handguard tool and a third hand to get them fully seated up front. Once seated there is no play, even without the screws. The only play in the rifle was a bit between the upper and lower, but that is because the nylon-tipped set screw in this lower was not adjusted for this upper. I don't have a QD swivel so I can't comment on that aspect of the rail, but I did mount a middle length vertical grip, also from Damage Industries, and it feels very solid in the hand and no discomfort from the rails with the thumb against the left side. Lastly, I didn't have a way to weight them and didn't feel like taking them off to bring them in to work and use the postal scale. Asking Damage Industries would probably be the best way to get the weight. Overall, for the $89+Shipping, I'd say they are a good choice for a quality, basic quad-rail. Made in the USA. I'll most likely have them out on the range this weekend. NOW FOR SOME PICTURES! Nice angle view 
Attempt at a frontal view 
Close-up of the interface with the front handguard cap. You can see the gap here, which is why I might poke at the cap a bit this evening. The rails don't seem to be seating fully with their anti-rotation notches up front, but even without fully seating they aren't moving at all. and I an betting that is from the tightness of the handguard cap. 
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| I lost picked one up also from a local gunsmith shop who partners with damage industries. Damage is from my town also. He had a second hand one that was 8+ or 9 condition that he sold me for $40. I am impressed by the quality of the rail also. I won't be able to install on my built until next week but he had a rifle for sale that had it installed on for sale that I was able to handle it on. |
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